Dilwyn bach, Why not the ubiquitous TISCALI ? I've set up many for different users.
Get >=version 10. It has s/w to set up on computer 'A' and (later) run the same CD and choose the option to transfer said same account to computer 'B' or C or D or DD! form that machine. I'd be aaaamaaaazzzed if you can't pick one up (as Celtically advised elsewhere on this esteemed list) - but, if push does come to shove, you have my e-mail adddress and, here in this part of Wales, we too, do have a Post Office ;>) Best wishes to all, John also in Wales