Add this to lilo.conf
Code:
other = /dev/hdb1
label = windows
map-drive = 0x80
to = 0x81
map-drive = 0x81
to = 0x80
table = /dev/hdb
and run 'lilo' as root. Then windows should be added to the list.
Edit: I suppose that Windows is on the first partition on that hard drive, thats why 'other = /dev/hdb1'