i believe mandrake will auto partition
it's also cooler b/c it has built-in mp3 support
im currently downloading the isos for mandrake 10.0, but in order to get my dual boot of windows xp/fc1 to work, i had to get Partition Magic 8 and resize my Windows XP ntfs partition (ntfs and linux dont work well together)
After that, I created a fat32 partition for windows and linux to share and modified /etc/fstab so that I could manipulate it w/o root access.
it sounds difficult, but it really isn't.