Memory lane is the present for me as my current system is running off of a Pentium M 1.6, 768MB DDR 333, and Geforce FX 5200. Before I had issues with the fan and overheating on my laptop I could run CS:S and HL2 comfortably @ 800x600 on DX8 with low settings (~25-50 FPS), but it won't handle older games such as Return to Castle Wolfenstein, Morrowind, etc... (I didn't bother testing many others). Sometimes the gameplay in ancient games like Homeworld is not even smooth (below 30-40fps at times).. I'll only have to put up with this for a few weeks as I'll soon be upgrading to Quad-core and 8800GTX. =)