I'll start by saying, I have never had a mac before so this is a new experience for me so dont laugh to hard
I was wonder what kind of ram is installed in the macpro's I have 2gb right now but I was thinking about going with 4gb what do i need to buy to make sure this will work??

Now for the harddrive, I have a raptor 150gb HD in my PC will this drive work in my mac?
Thanks guys!