old computor

I have a old computer 200mg that I'm trying to put window 95 back on after i fomatted the hard drive, when i come to the c:\> prompt what do i go from there. I have a win98 up grade but it won,t  take it because i don,t have a operating system after i formatted the system, I also have a 98se that won,t work. please help.    D-BESS