Linux stores in Phoenix & Mesa Area ???

Hi, I'm visiting the Phoenix/Mesa area this coming week. Can someone
recommend any stores in the area that carry a wide variety of Linux
distributions (Mandrake, RedHat, SuSE, etc.)?

I'm going to help a friend install Linux during my visit, so I was
hoping to buy a distribution while I'm there.

Thanks for your help!

Direct replies can be sent to:

ctjones1@bellsouth.net