[Rob M]

You should find that if you restart the PC with one of those discs in it will take you through the process of restoring it all to exactly how it was when you first bought it.

Remember though that this will delete all files and software from the drive. Make sure you copy any files that you need to CD first and that you have copys of any software/licence keys that you need.

You'll also need to get out any email addresses, web page bookmarks, or other information that you need to keep - this includes the settings for your emails (servers, passwords, account names, etc) and any settings you need to access the internet.

Also remember that anything you write to disc could be infected, so you'll need to scan those after you write them (and then again before you put them in the machine once it's rebuilt) just in case.