hi. i have dapped a bit in the world of dual boot, and this is what i did. i repartitioned my hard drive with fdisk, and i made a active primary partition, and an extended partition. i then formated c:. i then installed win 98, after that i installed linux red hat 7.2, did not load a boot loader, but made a startup disk. this way , when you boot your computer , you will go into win 98, if i wanted to go into red hat 7.2, i booted with the startup disk in floppy.
i did not have any luck with grub on the boot loader.