You haven't said what computer or motherboard you have. Installing RAM is very easy. If in doubt pull out the manual or do a google search. When you look in there you will see how easy it is to install, just don't force anything and you will be fine. Yes you can install four 512MB sticks to get to your 2GB if you feel you need 2GBs. I too say go with the faster RAM if your motherboard supports it and dump that PC2700 stuff.