partitioning 45 gig HD

[Nick]

Hello,   Does anyone have experience partitioning large Hardrives and making Lilo happy?   I don't know much about the 1024 cyclinder except that you need to install root somewhere before it.   How can I tell w/ my drive?  Using a IBM Deskstar ATA/100 45 Gig   I wanna make: / /usr /home /data maybe?   How do I know when to use primary vs. logical?