If you are not going for gaming, make sure you buy stuff to build a machine that can take lots of RAM and has good processing power. [ multi core 64 bit is good].
Dont make the same mistake i made. Dont go to Fry's if you are in the US. They are a bunch of Liars who go to any length to complete a sale. The throw buzz words as if they are knowledgeable but they dont know squat. only one or two of all of them knows any thing.
All the best, and please do let us know what happens.