Go for it. Laptops are a tad hard, but on a PC, that should be like a walk in the park on a sunny day in San Fransisco. That is definatley rated a 10 for someone who works in computers alot. I guess about a 6 2/3 for someone who has never opened one in their life. Unscrew the old drive, undo the wires, and slide it out. On some systems you have to pop the front plate of the computer off, but that is as simple as unlatching a few clips, and pulling. Once the old drive is, out, put it aside, Use it as a coaster. Now, if this is a one drive system, without a doubt set the drive to "master" using jumpers. If it is a two drive system, set the drive to "cable select," or "CS." That info should be located somewhere on the drive, the internet, or the drives manual. from there, slip the drive in, re-hook the cables, and screw it into place. Put the cover back on, without redoing the screws for it. Boot the system, play a music CD. If something goes wrong, turn it off, take off the cover, and ask us what to do. If it all works, CAREFULLY screw the screws back on the case. If you are clumsy, I would reccomend shutting the system off, so no bumps hurt it.
--Ryan