first off, what operating system are you putting to it? for instance, if it's 98, you would need to create a primary dos partition...
otherwise, if you are doing XP, is your cd bootable? if it is, did you set the BIOS boot sequence to pick up your cd drive first?
and if you ARE doing XP, why are you fdisk'ing? 2000/XP has a neato little delete partition option within the setup.