Originally Posted by mvincelli
Hi, I am trying to set up the 8900 as a modem, When I get to the step to enter the APN for T-Mobile in the Standard Modem Properties screen, the Change Default Preferences box in the lower right is grayed out so I can not enter the string shown in the steps. I am signed in as the Administrator.
Any ideas how to ungray the box? I am running Vista Home Premium.
Try going through this FAQ. Using BlackBerry As Modem - BlackBerryFAQ
There is Vista specific info there.