Okay, so I used the search and found this thread
Quote Originally Posted by baldyeti
Hi, it looks like you simply forgot to mark your boot partition (probably hda1) as active. Reboot off the cd (use "knoppix 2" to make it faster) then rerun cfdisk, and mark the relevant partition - and only that one - as bootable. If lilo had previously been correctly installed, your PC should now boot to your HD install.
So I'll try doing that and hopefully it'll work