So I basically use my computer for nothing but surfing the net, don't play all the fancy games or multi-task any large programs or anything like that. However, I can still appreciate a performance increase, when available. So I've got this Gateway from way back when -- 1.2GHz Celeron, 256 MB RAM, 40 GB HD, pretty standard cheap computer from back in the day. Now I know it's not worth spending money to upgrade an old POS like this to a bunch of serious dudes like yourselves, but I'm not looking to set the world afire here. The way I see it, a lot of people are parting out machines slightly newer than my own, and I could see a very realistic performance increase for very little coin, thus satisfying me for another few years (until I get jealous of my roommate's computer). First thing - processor. I believe mine is from the "tualatin" phase of processor development... Can I just swap in a tualatin pentium III? Like a 1.4 GHz PIII-S with a 133MHz bus and 512 KB cache? I need a bunch more ram, too, but I have yet to tear into the thing, and I seem to recall there being a bunch of different types or ram, and I'd better do some research before I start asking stupid questions.