I have a dell XPS laptop which has just been reformated and reloaded with System 7. When I plug in my broadband USB modem (760). the drivers are loaded and the verizon manager gets installed. when I try to connect, however, I get the error 633 device is in use or not configured properly. I have reloaded the drivers and got the most recent verizon manager with the same result. I have used the device manager to look at the devices to see if there is some conflict identified, but no such thing. How do I get rid of the 633 message and allow usage of the broadband modem?