There are a few programs which you can use that can tell you what you full system specs are. Sadly I've forgotten all of them right now.
You could just check the top of the hard drive and see what it says.
Yes I agree with you apokalipse, he would have to get a new graphics card and maybe a new CPU but it was only really a comment to say if you where going to upgrade further, a SLI PCI-E motherboard is needed.
I must also say, I just brought my family a computer for their chirstmas present. It only cost me $450nzd.
They used to have a P2 350mhz, 20gig, 64 gforce 2, etc etc system that was going at snails pace mainly because of Norton Antivirus. I upgraded it to a Althon Sempron64 2600+, 512mb ddr400, 40gig 7200rpm, gforce4 fx5200, CD+RW 52x, etc etc with a new case. Its only a basic system and used my old graphics card with their old monitor, keyboard and mouse. Now they have a fast computer with everything they need. It does also play the latest games just at a little lower graphic level.
By the way ethan, an upgrade of your ram to 1 or 2 gig and possibly a new hard drive would only cost around $300. Looking at your system specs, your hard drive would most likely be a 7200rpm so you wouldn't need to worry about that. A good 1gig stick should only cost max $150AUD. If you have slow start-ups when entering windows then you may have a 5400rpm drive.