Can I upgrade my desktop?

Hello all, this is my first post on tek syndicate. I was wondering if you guys could give me some advice on turning my desktop into a decent gaming rig? Thanks in advance, and here's some of my specs:

Sony VAIO VGC-RB50

  • Windows XP Professional (getting Windows 7)
  • Intel Pentium 4 3.20GHz
  • Intel 915g Express Chipset Family (w/ Intel Graphics Media Accelerator 900)
  • 1gb of RAM (Max 2gb)
  • 250gb Internal Hard Drive

 

If you need any more info, please ask and I'll see if I can find it. Anyways, is there any advice for upgrading this for preferably under $600? Thanks!

Yep. A new PC. That one is too old for any worthwhile upgrades. This build will play most modern games on medium to high settings.

http://pcpartpicker.com/user/armypig/saved/1oTl

yeah, i've heard bad things about pentium 4, but besides that 2Gigs of ram could really be a hinderance

That's what I feared. Thanks though, that build looks pretty great and it's right in my budget.