|Actually you don't make him a guest, make him a limited use. I think there is an issue with guest accounts still.|
You never want to be logged on as an admin. That is a good way to get hacked. Always make a limited user for you and others to use day to day. When you need to do admin then use run as to do admin work.
I support the 'Everybody Draw Mohammed Day'. A religion doesn't deny my freedom.