I think your not understanding the issue I posted here on how each program works. The tweak you noted by me is to define an alterate header template for the gallery for vb
to load on every page and has nothing to do with headtags. All that does is load a different header over Photopost globally for every gallery page. San-Deep wants a different header systems on each of his Photopost cats. The good ole optional header function. Vbulletin as well as our program both have the ability to setup in their respective admin panels special optional headers/footers/headtags for their forums or categories so you can have a different header footer for each forum/cat.
By nature the special functions of defining specific headers per cat is a function of each piece of software but not interchangable you need to use each software's specific header function to use it you can not expect vb
to load a different header per category over photopost it only does that in its product.
Now hopefully you understand the point I am making here. You ask a question on how to operate something and I tell you yes or no whether the program can do this. In this case it is not going to do what he wants using the vb
header system so the answer is to turn this off and use the Photopost header system which will gladly handle this type of function the same as vbulletin's header system gladly handles this type of function on its forums.