If you are after a photo gallery of some kind with the ability to comments on images and descriptions on albums etc, then you may wish to check out "ASP.net 2.0 Instant Results" by Wrox. One of the projects included is a photo gallery site (you can download it from this website). If you do want to integrate with the rest of the TBH site, this may still give you a good starting point.
Alternatively someone else has developed a gallery for TBH. If you ask nicely maybe they will share their code:
Hope that helps