Here's what I would do:
Download and burn Ubuntu or some other LiveCD-able OS. Burn the ISO to a disc using PowerISO (free)
Put the CD in the tray, when the computer boots up get it to boot from CD (might have to hit Esc to enter the boot order or something. Just read the bottom of the screen right as it boots)
Boot up Ubuntu, as a LiveCD, go into the drive, copy files out of the laptop drive and onto an external drive or a flashdrive/thumbdrive/whatever you like to call it.
Once you're done that, exit Ubuntu and put the Windows CD in. Install Windows as normal, use the external drive to put her files back, boom done.
Oh, and don't ever take anything into Futureshop. I have the qualification they have, they don't know shit
