Processor: Intel P4 3 Ghz
Graphics Card: ATi X800 XT PE
Memory: 1.5Gb DDR
Motherboard: Abit IC-7 Max3
Operating System: XP SP2
Hard Drives: 4 : RAID0 160Gb(2x80) + 1x160Gb + 1x250Gb

Currently saving for upgrade to Core2duo (or quad), DX10 card min 2gb Ram. Old pc will become linux based for webdevelopment

Processor: Intel(R) Core(TM)2 CPU E6600 @ 3.6 GHz
Graphics Card: GeForce 7600 GT (fanless)
Memory: 2 GB
Motherboard: Gygabyte GA-965P-DS4
Operating System: Linux (mine, entirely made and compiled from scratch)

That's the main, bow, there are several others : internet frontend laptop, backup, windows client (most of the time switched off), mythtv box, laptop for miscellaneous purposes (mostly for vacations).

CPU: AMD Athlon 64 X2 Dual Core 4400+
Memory: 2GB DDR2 SDRAM @ 667MHz
HDD: 320GB
MB: Nvida nForce
OS: Vista (32-bit)
Graphics: ATI Radeon HD 2500

Also has 5 USB ports, 15-1 card reader, lightscribe and 1yr warrenty.

Only £300

500gb HDD
4GB RAM (2x 2GB)
AMD dual core, 5600+, 2.8 GHz, 64bit
nVidia 8800GT 512mb (somebody help me find drivers... please)
Vista Ultimate x64 (legit)

processor: intel core2 duo e6750 2.66 ghz
ram: 2gb ddr2 ram 800 mhz
video card: nvidia geforce EVGA 8800gts 320mb superclocked
motherboard: asus p5n32-e sli
hdd: 320gb, 16mb cache
psu: 700 watts

yep took me long time to save up for, also got a ps3 2 weeks ago

Got mine around 6 months ago...

Processor: Core2Duo E6850 (3.00GHz)
Graphics Card: Albatron GeForce 8800 GTX 768 Mb
Memory: G.Skill 4Gb ddr2 (4x1Gb)
Motherboard: Gigabyte GA-P35-DQ6
Operating System: Windows Vista

Plus a Samsung spinpoint 160 Gb HDD

Guess it will last me for another 3 to 4 years

I nicked named my computer the "beast"
Here it is:
AMD Duron ~800Mhz
ATI Radeon 9700 Pro 128MB (Horrible, it was good like 5 years ago)
256 SD RAM (Ya baby, who else do you know that still uses SD Ram?)
No idea what motherboard
Windows XP

Got it in January 2000
TOP THAT

This thing can't even run solitaire.

EDIT: It's a Compaq Presario 5000 (LOL, do some research if ya want ;P )

EDIT 2: I don't play anything with this, I only use it for facebook, msn messenger, and downloading music and putting on my mp3. Anytime I want to play HL2 I do it on my dad's.

UHH EDIT 3: It originally came with 64MB Ram, I took that out and added 2 128's. It also had some laaaame nVidia graphics card. Like 8 MB or something. I put in the 9700 after my cousin gave it to me. 

Core 2 duo Q6600 @ 3.2 ghz
2 8800gt's @ 720 MHz core, 1650 shader, 2020 memory.
4gig OCZ DDR2 @1333 mhz (5-5-5-15)
P5N32-E sli motherboard
Coolermaster Stacker (6 120 mm fans)
Be Quiet 800W power supply
Syncmaster 226BW (1680*1050)
Philips 5.1 set
Razor Daimondback 3G
IBM Keyboard
2 Samsung HDD 400 gb
operating systems: Linux, Vista Ultimate, XP SP3

where do you find out all that data about your computer? I don't know where to look.

Well the people listing exact components and brand names built their PCs from the ground up, so thats how they know.

As for how you can find out what you have, if you are using windows right click on my computer and choose properties, a box will come up. In the lower right corner it will give you info on your processor and your RAM. For info on your GPU(s) you click the "Hardware" tab at the top and then hit the "Device Manager" button. A new window will pop up with an expandable tree list...you want to expand "Display Adapters" and your video card will be listed there.

That will get you the three main pieces of information. And remember to hit cancel when exiting those windows just to make sure that you don't change anything (unless you want to change something, in which case make sure you know what you're doing).