Running EQ off a flash drive(USB)

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Hey i know i can google this but there seems to be no straight answer...

What im wondering is how do i run everquest or any program ( but lets just use Eq) off of a flash drive with out having to install it or anything on a computer? i would love to know how to do this so i can play while im at class or at a friends house who doesnt want me to download anything [You must be logged in to view images. Log in or Register.]))
any advice or actual answer would be thankful including you goobles because i know you willread this and you know i love you ( damn trolls xD)