Boot from your Windows XP CD and go into the Recovery Console. You will need the Administrators password for that. Run FixMBR and that will get rid of LILO.
OK i did that and it worked.
my HD has 2 partitions, C - WinXP system, D - data.
i was worried that fixmbr will leave me with C only and i'll lose access to my data (all backed up of course), but no. did fixmbr (1 second long) and rebooted. Grub was gone of course and booted into Windows, both partitions are there, my data intact.
of course i've no access to Linux now, but nothing a quick re-install won't fix.
yeah, i'm sure there's a cleverer way of doing all this stuff but i've no time to research/learn it.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien