wireless problems - limited or no connectivity

I'm having a problem connecting my Inspiron 2200 laptop wirelessly.  It works fine with a wired connection, but not wireless.  Here are my settings when using wireless:

C:\Documents and Settings\Chris>ipconfig/all

Windows IP Configuration

        Host Name . . . . . . . . . . . . : HughesEaston
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Broadcast
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

        Media State . . . . . . . . . . . : Media disconnected
        Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connection
        Physical Address. . . . . . . . . : 00-11-43-4C-12-5F

Ethernet adapter Wireless Network Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Dell Wireless 1350 WLAN Mini-PCI Card
        Physical Address. . . . . . . . . : 00-0B-7D-1C-B8-CB
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        Autoconfiguration IP Address. . . : 169.254.138.104
        Subnet Mask . . . . . . . . . . . : 255.255.0.0
        Default Gateway . . . . . . . . . :

 

The odd thing is that my network is 192.168.254.x (subnet mask 255.255.255.0) so it's obviously not picking up the correct infomation even though dhcp is enabled.  I tried using an expicit ip address and at that point, the limited or no connectivity message went away and things looked good, but I still couldn't connect to the internet or ping my primary computer.

 

Any suggestions would be appreciated.

 

Thanks.