I would like to change a hardrive in a computer but have no idea how. I was wondering if this was hard to do. Here is the reason. To make long a story short i know someonw who is buying a used computer but it only has a 3 gig hardrive in it. I believe it is a PII. She has an older computer which is a PI and it has a 30 gig in it. I wanted to do a swap. Does anyone know any good step-by step sites i could use as a guide.