Hey all. I've decided that I will be building a computer this summer (which I've never done before) and I have one question right now (although I'm sure I'll have plenty of others as school ends and I can really start this). What parts should I definitely NOT get OEM and buy retail. Processor? RAM? Hard Drive? What part could be a potential major headache if I get it OEM and something goes wrong? My understanding of an OEM product is a product that is just the hardware, without things like a manual. Remember that my knowledge of computers is SIGNIFICANTLY less than most of yours, so try to put yourself in my shoes. Thanks.