Thanks everyone, again.
However, I have a few more questions for all of you-
What kind of powersupply do I need? I am planning on going with more than I need (600-650) just in case I decide to upgrade it later, but I have no idea what I want. I don't want to cheap out and risk damages.
Is it BAD to buy used parts from previous builds? I found someone selling a PC they bought 6 months ago and it is a good build, and good price, so I wanted to buy it and use some of the parts from it. Will the power of the processor, for example be lacking a lot, or should I just buy new?