Off the internet is primary. What 'tools' does he have on his machine? If he has only a smitfraud infection he might get a friend to download
this and put it on a stick for him. It may be enough if that is all he has, but the bad news for your friend is that you cannot be sure
what has been planted on the machine in the earlier process. To thoroughly clean the machine without an internet connection will be very tedious!
A lesson to be VERY careful taking phone numbers for 'support' from Google without verification.