Its not at all difficult to put a new harddrive into your PC. So don't worry about that.
Seagate is praised as the most quiet HD, so thats good.
But there are some requirments you should be aware of. This version comes with Serial ATA (SATA) interface so in order to use it you need SATA connectors on your motherboard. Which begs the question: What's the brand and model of your motherboard?
I would recommend you to look for an IDE HD as they are usually a little bit cheaper, and all motherboards support at least four IDE drives (hardrives and CD/DVD-roms)
Note that XinXP requires SP1 to support drives bigger than 127GB.
Other than that you will need to partition the new drive and assign a drive letter to it, for windows to list it in 'My Computer'.
Good luck and have fun
