If you're correcting your white balance in Camera Raw via Bridge, it's very easy to apply the settings in a single image to all the others. I'm at the beginning stages on CS2 as well, so I'll share with you what I've learned this week.
In Bridge, there are several ways to do accomplish your goal:
First, you need to select the files you want to batch together in bridge and open them all at once in camera raw. You can do this by selecting them in the thumbnail screen and doing control/command R. You should get one file in the Camera Raw preview window and the others on the left side. If you click "select all" and "synchronize" above all the thumbnails in Camera Raw, the changes you make to your main image will be applied to all the selected images as you go.
I prefer to leave select all/synch. unchecked, while I modify my first image. You can then select the rest and click synchronize for all the adjustments to apply afterwards.
A second method would be to open one image in Camera Raw, make your changes, and click done. If you return to your thumbnail preview page, you can right click (I'm on a pc) the corrected image and select "copy camera raw settings" which then allows you to select other images on which to "paste" your new settings. You can use shift/click to select as many images you want at once and apply your new settings that way.
This should get all of your images very close to each other quickly, and then of course, should you want to make add'l changes to individual images, you'll at least have the same starting point each time.