I have an eMachine t3092 computer, specs here:
It originally had 512 mb of RAM, (pc2700, 333mhz, ddr).
I play a lot of games that would really benefit from another 512, and since I had a free slot, I popped one in, the exact right one. The RAM showed up fine in windows, but as soon as I opened up, say, Warcraft 3... bigtime memory errors.
I know this could have something to do with the integrated video card, but that's about as far as I can figure. If you have any idea what I can do, please post here or email me. I will be returning the RAM tomorrow, and basically getting a new computer (which I can't afford) in any other case.