The new Adobe Bridge is a completely separate application from Photoshop CS2, unlike it's predecessor the File Browser. You'll often go back and forth between the two programs as you use Bridge to view and select images and Photoshop to edit those images. So how do you move from Bridge to Photoshop CS2 and vice versa?

If you're in Photoshop CS2 and want to go to Bridge, either choose the small Go to Bridge icon on the right side of the Photoshop Options bar or choose File>Browse from the menu at the top of the screen. Bridge will take a few seconds to launch if it's not already open.

To move from Bridge to Photoshop, click the Adobe Photoshop CS2 item in the Favorites panel on the left side of Bridge. You may have to click the Favorites tab to bring the Favorites panel to the foreground. If you don't see the Favorites tab, you're in one of the special Bridge workspace views. In that case, choose Window>Workspace>Reset to Default Workspace.

After a while,  you'll probably prefer using the keyboard shortcut — Control+Alt+O (the letter O) on Windows or Command+Option+O on Mac — to toggle back and forth between Bridge and Photoshop.

More on using Bridge with Photoshop CS2:
Reviewing photos in Adobe Bridge