I had a very happy dual boot setup with W2K and Kubuntu. But since I hadn't booted anything but Kubuntu in months I got the idea of playing with Slackware on the 'spare' partition and installed VL 5.9. After formatting the NTFS partition as EXT3 in Kubuntu I installed from the CD. LILO configuration said it would install VL, VL-GUI, and VL-TUI. Stupidly, I confirmed the choices and continued. Upon rebooting those were the only choices for OS. I booted a Kubuntu Live CD and 'repaired' GRUB. That brought me back to a boot menu with Kubuntu and Windows. Kubuntu was back but if I chose "Windows" I got GRUB error 13: Invalid or unsupported executable format.
I tried to add VL to Grub's menu.lst by inserting a boot option with the parameters from lilo.conf (I can mount the VL partition in Kubuntu) and it seemed to work, up to the point where I got a kernel panic when VFS tried to mount <NULL>.
The frustrating thing is that it almost worked; it started booting and then choked.
grub.menu listing for VL
# This entry automatically added by the Debian installer for a non-linux OS
# AND REM-D OUT BY LARS
# on /dev/sda1
#title Windows NT/2000/XP (loader)
### ADDED BY LARS
title VectorLinux GUI
Hard drive in question is:
HD0,0 VectorLinux , EXT3 (Formerly NTFS), Flagged Active
HD0,1 Kubuntu, EXT3