Nup -- see what happened is this.
His puter is really slow these days, so I thought I'd surprise him and fix it.
So I checked all the TuneUp Utilities stuff then I went in and saw there were so many users in Control Panel | Users and Passwords.
Heaps of them, and lots not recogniseable, so I deleted them coz I thought they might be trojans and that's why his puter is so slow.
But I was wrong. But I didn't delete anything from the hard drive. I figured is it can't get on the network and therefore the internet, I just need to restore the old users but can't figure it out