Upgrading options for Alienware M17X

It's been over four years now that I have this laptop with me and has been doing okay, Heating issues and fan wise has always been a problem. Now, the time has come to upgrade my old heep to a newer and much stronger processor with better RAM and Video card. I have below info of my laptop. What would I need to get to upgrade this laptop to breath new air? Thank you very much for your help in advance.

Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_rtm.101119-1850)
Language: English (Regional Setting: English)
System Manufacturer: Alienware
System Model: M17x 
BIOS: Ver A07 1.00PARTTBLZ
Processor: Intel(R) Core(TM)2 Quad CPU Q9000 @ 2.00GHz (4 CPUs), ~2.0GHz
Memory: 6144MB RAM
Available OS Memory: 5886MB RAM
Page File: 3290MB used, 8479MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 64bit Unicode

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Display Devices
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Card name: NVIDIA GeForce GTX 260M
Manufacturer: NVIDIA
Chip type: NVxx
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0618&SUBSYS_02A11028&REV_A2
Display Memory: 3692 MB
Dedicated Memory: 1005 MB
Shared Memory: 2687 MB
Current Mode: 1920 x 1200 (32 bit) (59Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: unknown
Monitor Id: SEC5443
Native Mode: 1920 x 1200(p) (59.964Hz)
Output Type: Internal
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 8.17.0012.5738 (English)
Driver Version: 8.17.12.5738
DDI Version: 10
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 6/28/2010 10:51:00, 12340328 bytes
WHQL Logo'd: Yes
WHQL Date Stamp: 
Device Identifier: {D7B71E3E-4558-11CF-F265-AD221CC2C535}
Vendor ID: 0x10DE
Device ID: 0x0618
SubSys ID: 0x02A11028
Revision ID: 0x00A2