Hey,
The easy way to do this, is first install xp-pro on the drive, and telling the windows installer to set the drive in 3 partitions, installing xp on the first. Then, once thats installed, insert your linux cd, and run that installer, and tell it to use the second partion, this will also instlall a bootloader program for you, which xp-pro and most linux have. so now at this point, when you turn on your computer, you will get a menu to ask which OS to use. You can not install 98 with that cd on the third partion, and after that the boot menu will show all 3 OS's.
If thats not very clear let me know, I am typing in a hurry,
