PC Building Resources
Heres a list of some of my favorite resources for building PC's:
Guides:
LifeHacker's Guide
Newegg's Video Guide
Recommended Online Retailers:
Newegg
Amazon
Microcenter
NCIX
Tiger Direct
My favorite way of creating parts lists (makes life 10x easier) :
PCPartPicker
Cheap OS's
Win7KeySale