I am new to the mac world. I bought a macbook with parallels (for XP)a couple months ago. I wanted to use MS Streets and Trips with my Altina usb gps unit. The unit never shows up. I try to go into the configuration but it says it says you cant configure while the vm is running.I try to access usb controller by stopping or suspending the vm but then the configure screen auto closes. Please spell out how to get xp in parallels to see the usb devices... or mabey it just wont work? Help... thanx