Hi, folks. It was sickening when I put my fascinate into the car dock and up came all this VZ Navigator and Bing stuff. Ugh! Following tips on some other forums I downloaded Custom Car Home from the AppBrain Market. This app lets you put whatever nav and search apps and anything else on a custom car dock app. Settings let you auto load Bluetooth, auto switch on GPS, Disable WiFi and a bunch of other stuff when the app launches. I had trouble initially getting the app to load automatically when I connected the dock but finally overcame that problem. This solution even works with LauncherPro and the WidgetLocker screen lock active.
Here's how I did it:
Downloaded app called "Locale" (A little pricey but well worth it when you start to see what it can do.) Also the Locale Dock Condition app and the Locale shortcut plug-in app. With those installed you go into Locale and set condition > Car dock and save it Then under cardock condition > setting > shortcut > custom car home. Locale then monitors your phone for the stated condition and when detected launches the app you have chosen in your shortcut. Now the behavior is when in Launcher Pro and screen locked (OR Not if your prefer) whenever I connect the car dock to the phone the custom car home app automatically launches. 8 big easy to touch icons of your own choosing on the default screen plus two more pages of your own customized shortcuts (8 apps each Page) in large easy to touch icons. I highly recommend this app and set-up if you don't like the car cradle app that comes with the phone.