Installing XP on formated HD

Ok heres the problem i have XP Pro and when i format the hard drive and then partion it so that i can install XP it says that the setup.exe file for cannot run in DOS. I have been able to once b4 install 95 then do a full install of XP over top of 95 and it worked but i am trying to figuire out how to make it where i can install XP correctly.
Any help on this would make me greatly indepted to whomever helps me out