Question : problem trying to tftpdnld a new router ios to a corrupted router

I have a cisco1721 router. I somehow managed to totally corrupt the ios when loading SDM over the top of the ios. I have since purchased a new ios but cannot figure out how to download this onto the router. Since the ios is corrupted it does not have an ip address and therefore I cannot set the ipaddress variable of the router for tftpdnld command. How do I go about pushing this new ios image on CD down to my router?

Answer : problem trying to tftpdnld a new router ios to a corrupted router

No, what you are doing is setting the IP address of the router, not specifying the existing IP address.  You are giving it an IP address when using the variables.