Hello all I just need some help figuring out what RAM I need for my PC . My pc can hold up to 2g right now I have 1024mb DDR RAM both are 512 PC2100. Now I opened up my pc and looked at the slots and thought I could just buy 2 more of the exact ones, but I cant the slots are different. My question is how do I figure out what type of RAM fits in those other 2 slots? I tried using some tools to find my RAM but it wont say what the other 2 slots are. I was thinking maybe I need 2 SDRAM for the other 2 but not sure. So if you can help me that would be great. If you need any other info about my pc Ill try to post it.