Grub or Lilo

Hi All, I am trying to set up a multi-boot system with 2 HD's. My problem is getting Lilo or Grub to see all the OS's. Here is how I set it up: On my Dell 4600 (3ghz, 512 ram, 80gig HD), I have XP Home on the 80 gig. I then added a 160gig and made it the master and the 80gig the slave. I installed Win98se on the first part of the 160 then SuSE on the next (Grub booted everything). Then I installed Mandrake and Lilo and Grub booted everything but SuSE. I tried editing but no luck. How do I get Lilo or Grub to boot everything? I am in the process of reinstalling everything. I have XP and Win98se installed. Mandrake and SuSE are next (They'll go on the 160) Thanks Russ