If you are gonna suggest using Yahoo file sharing, I suggest you outline what he will need to use it.
I can't , as I've never used it.
Keep it simple, too, as he has said he doesn't understand some of the stuff we've been saying.

We are a bit computer jargon orientated in here, aren't we?
Cheers
Mick
Edit: I still suggest the little app, BFTU, especially if you will only do this kind of transfer very rarely.