[Jase2]

Most computer nowadays require 2gb...more commonly in Vista, however.

Each person is different. We cannot say whether them system specs are good enough for you, because we don't know what you do on your computer. Do you just use your computer for general browsing, reading emails, ect ect, do you play the odd game?, do you play extreme games...so on and so forth. These are the questions you really should be answering and letting us know, only then will we be able to advise whether them system specs are suitable for your needs.

If you're going with Vista, and you just use your computer for general browsing, reading emails ect., then Home Basic will be fine. If you want more from your PC, and you play high-end games, then consider Home Premium with a minimum of 2gb. Also be aware, if you're going to be running a x86bit OS, then you cannot go higher than 4gb -- this is because x86 OS's don't read any above that, so your memory will just be wasted. If you want more, then you would need x64.