CE guest pass question.Follow

sorry if this is complete newb question here.

but i have the CE with the 10 day guest pass, and want to give it to my friend in another state so he can try the game out.
i'd rather not send him my dvd of the game... but his roomate does have a copy of the game (non CE).... can he use his roomates cdroms to install the game, and then use my guest pass?

awesome!

thanks for the speedy reply.