Ok. I would like to have 3 operating systems XP, Vista and 7 on one computer. I have 2 HD's on my computer. I will put Xp on my 70GB HD and that will work fine. When I use gparted live to partition off my 500 GB hd into 2 separate partitions do i make them as secondary partitions and format as ntfs? I am not sure so if someone could point me in the right direction I would appreciate it.
You must have a primary partition. But why bother with Vista? I can see why you would want XP & W7, older programs may require XP if they can't run in W7, but any that run in Vista should work either in XP or W7.
Do yourself a favour and save the hassle of installing a 3rd OS and drivers then updating them all with Windows updates.