Building a PC
Intel + NVIDIA, use the EVGA sub brand for NVIDIA parts. RAM can be either Corsair, OCZ, and Mushkin (my favorites), but Crucial, G.SKILL, and Kingston are good too. I suggest COOLER MASTER cases, Vista x64, and for power supplies (very important), read the link below. COOLER MASTER is my favorite brand for PSUs too.
For mice, keyboard, and speakers I suggest Logitech and sound cards I suggest Creative. Now tell us your budget and we can get things rolling 😀