PC specs

So I recently got a computer from my brother for free (yay) and it runs pretty well and from the games I have it runs pretty well (those being mostly old games like diablo 2, original half life, star wars kotor etc) I'm getting internet for it soon but I was wondering when I start playing more modern games if my computer is any good in terms of pc specs. I only have a vague understanding about pc specs so I just wanted to know if my computer is decent.
This is a summary of some stuff:
Windows 7 home premium
Cpu type: Intel Pentium III Xeon, 2933mhz (6 x 489)/ cpu name intel core 2 dou cpu e7500 @ 2.93ghz
Ram: 2gb (from what I understand that's not that good)
Display: device name inter g41 express chipset 4series express chipset family (current display mode 1920x1800 32bit 60hz) approx total memory 814mb
like I said I don't know much so this is all I could really think of atm if theres anything else that would help you understand if its a better pc let me know I'm a newb to this kinda thing
 
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