Camera Raw 6.3 should support the D7000 if it's correctly installed. In Photoshop go to the Photoshop menu> About Plug-ins and check the version of Camera Raw. Is is 126.96.36.199? If not then you don't have the correct updated version of Camera Raw. Bridge relies upon Camera Raw to rip the raw files and show the image previews. So, you'll want to make sure you've updated to the current Camera Raw 6.3 which is available here.
Yes, It is version 6.3. But it says 188.8.131.52. (0, not 9)
sorry...typo, should be a 0 not 9...
So Photoshop is seeing ACR 6.3 but Bridge can't seem to use it for building previews. It could still be that ACR 6.3 isn't properly installed. The correct location is root (the main not the user) Library/Application Support/Adobe/Plug-ins/CS5/File Formats/Camera Raw.plugin Then click on the plug-in and do a command I to confirm it's version 6.3.
If it is, it's correctly installed.
In that case, you may need to navigate to the folder with images in Bridge and use the command Purge Cache for Fold xxxx found under Tools menu > Cache. If that doesn't work you may need to reset Bridge's preferences. Hold down Command/Option/Shift when launching Bridge. Note, this will wipe your preferences so you'll need to go back into the Bridge preferences and set them the way you want them again.
Make sure there is only one copy of ACR in the file folder.