[Ubuntu-BD] installing ubuntu with other os

[just d way u like]

plzz help me out i have window xp as primary os
and ubuntu is installed within it
now recently i installed win 7
and now my cllg have directed to install fedora 13 for administrative
purpose since some files in ubuntu is scatered in some other places
but i dont want to uninstall ubuntu so can i install fedora with out
removing ubuntu.. or it is not possible to install to linux os in one
system/........
plzz do not ignore since this is of track.......................