The Super Grub Disk:
http://supergrub.forjamari.linex.org/
http://users.bigpond.net.au/hermanzone/SuperGrubDiskPage.html
is a disk (there appear to be several variations out there) which can fix boot problems on Windows and Linux too. Especially useful after a Ghost hard drive transfer, to fix the MBR and active partitions etcetera. It comes as an ISO suitable for burning to CD, and also as a floppy image. The best floppy image manipulator for Windows out there, I believe, is a special ‘dd’, here:
http://www.chrysocome.net/dd