After the Video menu hack, and the Music menu's one, i'll show you how to add Nokia photo browser to the N97's photos menu as seen below :

Install Nokia photo browser and then paste photos_items.xml into C:/private/101f4cd2/suites/photossuite

Ps : You can do the same with other applications, any installed application can be added to the photos menu list by changing the uid in the xml file below.

All credits to biggzy from symbianscientist !