Hey guys,
I am looking into having a friend of mine build me a desktop computer (right now all i have is a 17in laptop that is becoming a dinosaur) I play a lot of games: Warcraft 2 and 3, Empires: Dawn of the Modern World, Rome: Total War, Age of Empires. I would like a PC that can handle all of these quite easily without having any lag. I also would like a large amount of memory. Basically, I'm asking if anyone has any suggestions for parts to make a killer gaming computer... I've looked at Newegg, but I'm completely computer illiterate and i don't know what i need and what will work well for me... any suggestions?

Thanks,
Justin