Did you read over all the instructions? Because after you're done, it should be located http://yoursite.com/gallery/ And assuming that the HummerForum is the one you're installing it to, you didn't exactly do it right
Exactly, you can add the latest photos to the homepage as well as in your profile and member postbits. Search over at vbulletin.org for hacks. I personally have several integrations from modifications there and here.
Since the vbg is under new ownership we are looking for your suggestions for the next versions of the software.