ok,
you download the Mandrake ISO's (you definatly need number 1, and i would advise having number 2, but u can get away easily without number 3
saving a 650mb d/l)
format with partition magic, make it probably minimum of 7-8 gig. Chuck in Linux disk 1 & reboot.....it strts itself and allows you to select the partition you want to install to.
It aso installs a boot manager later on so you can choose which OS to boot at startup.
hope this helps,
§talk