Hi
I don't know much about computers.
I have a compaq presario sr5350f
http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c01328709
I want to upgrade to a quad core PC.
If I want to, do I just have to buy a new CPU and motherboard? or do I have to start from scratch? I would like...