If you are proficient in CPanel and WHM then call me on 07 54769553 and I'll return your call. I've just joined a hosting firm and now need to learn these and would find verbal training more rewarding than reams of paper and/or website info.

Sorted. The question turned out to be related to setting up an account in WHM. If you set up a hosting account, always set it up with the final domain name, even if that is currently unavailable. You can't successfully change the domain on an account later.