newegg.com

High processor speed (Around 3ghz +) and make sure it's 64bit.
Maybe this? https://www.newegg.com/Product/Produc...82E16819103527

But if you're going for something a little less pricey, https://www.newegg.com/Product/Produc...82E16819103547


Atleast 256mb graphics card.
A few good looking cards I've just found:
If you are really goddamn rich: https://www.newegg.com/Product/Produc...82E16814133141
https://www.newegg.com/Product/Produc...82E16814130237 (a lot of people ranting about it being great for gaming but I've heard it's not bad as a rendering and 3d card.

3 Gigs RAM or more.

Not much else matters too much besides a nice enought motherboard to handle all of your equipment

NOTE: You should probably look through all of the newegg stuff anyway.

Actually, post your price range cuz a computer with some of the stuff I was just looking at would end up as like $3000+