i have dual booted the following:

1) Red Hat 8 with windows xp pro - NTFS
2) Red Hat 8 with windows xp pro - fat32
3) Red Hat 8 with windows 98 se - fat32
4) Lindows with windows 98 se - fat32
5) Knoppix with Windows XP pro - ntfs (with lilo - default)
6) Knoppix with windows 98 se -fat32 (with lilo - default)

It seems that over recent months, the distros have realised that people want dual booting computers. Red Hat 8 is very simple, it sets up lilo on install, no messing from you. Knoppix also installs lilo for you, no messing. To install knoppix and get it dual booting with any windows just run knx-hdinstall from a root shell.

I'm presuming that you haven't tried setting up your pc to dual boot with linux and windows, because IT'S EASY!!