You will have to pardon any screw ups-- I'm on a gentoo box right now.
A couple ways to get to lilo in mbr--
1 During install
a,-- choose "expert" install (of lilo that is)-- this will bring you to a menu
b.-- choose "begin lilo header" from that menu -- follow instructions - when done it will bring you back to the menu in step a
c.-- choose "install windows partition" - follow instructions - when done it will bring you back to the menu in step a
d.-- choose "install linux partition" - follow instructions - when done it will bring you back to the menu in step a
e.-- choose "install lilo" -- follow instructions but make sure when it asks you were you want to install lilo you choose MBR (it is NOT the default choice!)
2 Use your boot floppy -- log in as root
a.-- cfdisk /dev/hda
Check to see if the first partition has the bootable flag set (If not -- set it to do so, be careful with cfdisk)
b.-- /sbin/lilo -M
Should do it
3. If you have no boot disk-- boot with the install cd and it will give you instructions on how to boot your operating system with the kernels on the cd--
follow the instructions for #2
Have fun