first, this hopefully will answer your question:
http://help.godaddy.com/article/1361
second, normally people do this the other way.
godaddy is one of the worst hosts in the world, but one of the best domain registrars in the world.
be sure that your client gets linux hosting and not windows hosting.
on godaddy's windows hosting accounts, things like php/mysql based bulletin boards and blogs, do not work.
their tech support is laughable at best.....
I could go on but I won't.
good luck,
robert