if u wanna have, say, win95/98/me AND something like WinXP/nt, youll have to put 95/98/me on first then xp or whatever. When u put nt/xp on there it will give u the option of a dual boot. if u put nt/xp on first then 95/98, it will **** up as 95/98 will overwrite the boot info stored on the primary hard disk. if u want 2 copies of 95/98, youll have to get some form of dual boot software.

Or something like that ;)

hope that helps