I can not connect to network via wireless

Hi

I got a problem my wireless doesn't work

my system into is :

C:\Users\Hamideh>systeminfo

Host Name:                 HAMIDEH-PC
OS Name:                   Microsoft Windows 7 Home Premium
OS Version:                6.1.7601 Service Pack 1 Build 7601
OS Manufacturer:           Microsoft Corporation
OS Configuration:          Standalone Workstation
OS Build Type:             Multiprocessor Free
Registered Owner:          Hamideh
Registered Organization:   Microsoft
Product ID:               
Original Install Date:     15/02/2012, 7:45:33 PM
System Boot Time:          06/11/2012, 10:30:14 PM
System Manufacturer:       Dell Inc.
System Model:              Dell System XPS L702X
System Type:               x64-based PC
Processor(s):              1 Processor(s) Installed.
                           [01]: Intel64 Family 6 Model 42 Stepping 7 Genuine
el ~2201 Mhz
BIOS Version:              Dell Inc.          A14, 11/11/2011
Windows Directory:         C:\Windows
System Directory:          C:\Windows\system32
Boot Device:               \Device\HarddiskVolume2
System Locale:             en-ca;English (Canada)
Input Locale:              en-us;English (United States)
Time Zone:                 (UTC-08:00) Pacific Time (US & Canada)
Total Physical Memory:     8,152 MB
Available Physical Memory: 5,690 MB
Virtual Memory: Max Size:  16,303 MB
Virtual Memory: Available: 13,198 MB
Virtual Memory: In Use:    3,105 MB
Page File Location(s):     C:\pagefile.sys
Domain:                    WORKGROUP
Logon Server:              \\HAMIDEH-PC
Hotfix(s):                 136 Hotfix(s) Installed.
                           [01]: 982861
                           [02]: KB971033
                           [03]: KB2393802
                           [04]: KB2397190
                           [05]: KB2425227
                           [06]: KB2459268
                           [07]: KB2475792
                           [08]: KB2478662
                           [09]: KB2479943
                           [10]: KB2482122
                           [11]: KB2484033
                           [12]: KB2488113
                           [13]: KB2491683
                           [14]: KB2492386
                           [15]: KB2495523
                           [16]: KB2496898
                           [17]: KB2503665
                           [18]: KB2505438
                           [19]: KB2506014
                           [20]: KB2506212
                           [21]: KB2506928
                           [22]: KB2507618
                           [23]: KB2509553
                           [24]: KB2511250
                           [25]: KB2511455
                           [26]: KB2515325
                           [27]: KB2518869
                           [28]: KB2519736
                           [29]: KB2522422
                           [30]: KB2529073
                           [31]: KB2529825
                           [32]: KB2532531
                           [33]: KB2533552
                           [34]: KB2536275
                           [35]: KB2536276
                           [36]: KB2539635
                           [37]: KB2541014
                           [38]: KB2544893
                           [39]: KB2545698
                           [40]: KB2547666
                           [41]: KB2550648
                           [42]: KB2552343
                           [43]: KB2556532
                           [44]: KB2559049
                           [45]: KB2560656
                           [46]: KB2562937
                           [47]: KB2563227
                           [48]: KB2563894
                           [49]: KB2564958
                           [50]: KB2567053
                           [51]: KB2567680
                           [52]: KB2570791
                           [53]: KB2570947
                           [54]: KB2572077
                           [55]: KB2579686
                           [56]: KB2584146
                           [57]: KB2585542
                           [58]: KB2586448
                           [59]: KB2588516
                           [60]: KB2603229
                           [61]: KB2604115
                           [62]: KB2607576
                           [63]: KB2616676
                           [64]: KB2617657
                           [65]: KB2618451
                           [66]: KB2619339
                           [67]: KB2620704
                           [68]: KB2620712
                           [69]: KB2621440
                           [70]: KB2631813
                           [71]: KB2633873
                           [72]: KB2633952
                           [73]: KB2639308
                           [74]: KB2640148
                           [75]: KB2641653
                           [76]: KB2641690
                           [77]: KB2644615
                           [78]: KB2645640
                           [79]: KB2647516
                           [80]: KB2647518
                           [81]: KB2647753
                           [82]: KB2653956
                           [83]: KB2654428
                           [84]: KB2655992
                           [85]: KB2656356
                           [86]: KB2656373
                           [87]: KB2656411
                           [88]: KB2658846
                           [89]: KB2659262
                           [90]: KB2660075
                           [91]: KB2660465
                           [92]: KB2660649
                           [93]: KB2661254
                           [94]: KB2665364
                           [95]: KB2667402
                           [96]: KB2675157
                           [97]: KB2676562
                           [98]: KB2677070
                           [99]: KB2679255
                           [100]: KB2685939
                           [101]: KB2686831
                           [102]: KB2688338
                           [103]: KB2690533
                           [104]: KB2691442
                           [105]: KB2695962
                           [106]: KB2698365
                           [107]: KB2699779
                           [108]: KB2699988
                           [109]: KB2705219
                           [110]: KB2709162
                           [111]: KB2709630
                           [112]: KB2709715
                           [113]: KB2712808
                           [114]: KB2718523
                           [115]: KB2718704
                           [116]: KB2719177
                           [117]: KB2719857
                           [118]: KB2719985
                           [119]: KB2722913
                           [120]: KB2724197
                           [121]: KB2729094
                           [122]: KB2731771
                           [123]: KB2731847
                           [124]: KB2732059
                           [125]: KB2732487
                           [126]: KB2732500
                           [127]: KB2735855
                           [128]: KB2736233
                           [129]: KB2739159
                           [130]: KB2741355
                           [131]: KB2743555
                           [132]: KB2749655
                           [133]: KB2756822
                           [134]: KB958488
                           [135]: KB976902
                           [136]: KB982018
Network Card(s):           2 NIC(s) Installed.
                           [01]: Realtek PCIe GBE Family Controller
                                 Connection Name: Local Area Connection
                                 DHCP Enabled:    Yes
                                 DHCP Server:     192.168.1.1
                                 IP address(es)
                                 [01]: 192.168.1.2
                                 [02]: fe80::90ea:3927:92ab:8f81
                           [02]: Bluetooth Device (Personal Area Network)
                                 Connection Name: Bluetooth Network Connectio
                                 Status:          Media disconnected

C:\Users\Hamideh>

I read this link http://en.community.dell.com/support-forums/network-internet-wireless/w/networking_internet_wireless/1411.connection-enabled.aspx

But I can not connect to the network with wireless and  the masseage I got is : Adaptor not found

thanks