As per Rickenbackerus' post at the start of this thread,
Boot w/ win98 boot floppy, at the a: propmt enter:

fdisk /mbr
You do have a Windows 98 boot floppy? If not, perhaps the *fdisk /mbr* command can be run from the Windows 98 CD, or a boot floppy created on another machine which is running 98.

Or get to work and convince your girlfriend that Linux is better than Windows anyway.