Custom Computer im planing on makeing a custom computer

[player3c 0]

with the computer im gona make im gona be playing runescape minecraft fiesta and i want to be able to vid all of theese wiht fraps and hypercam on high detail with no lagg and ill be editing with sony vegas probaly and need picture project whats a good setup what should i get for it to work well ask questions and ill awnser asap