when trying to install office 200 pro of my windows xp pro , it displayed an error message saying some install file wasn\'t valid for win32, futher more, i couldn\'t copy the install to my h.d, because it clamied that dcom95.exe isn\'t a vaild ms-dos application(

?)
i had the exact install working on some other winxp pro computers.. but mine refuses to install it
can anyone help please?