I had a working network with two computers with xp and a printer. I am adding a new one with 7 and the pcs cannot open files on the 7 which requests passwords. I have not set up any password for the newtwork, but all sharing has been allowed. The 7 does not even see the printer (do I have to install the drivers first? there used to be a menu before form which to select your printer...) Networks have always been my hell! please help