You're confusing 2 things here:
· a submission page where you go and submit your tgp galleries
and
· a trading script (like UCJ) which is for trafic trades (basically your site sending traffic to his site, and he sending hopefully more back to your site) - like a link exchange! For this you need a main site with (at lest some) established traffic, and then you should look for trades of similar to a little larger size (in trafic). If you want to do this - there are several free scripts around which do the same as UCJ (which costs something like $600): traffictrader, awg, etc....
If you want to submit tgp galleries try to read a few more threads on this (or other) board(s), and try to find suitable tgps which still take (un-paid) submissions - these are taken and managed through very different scripts!
This belongs now into the
section! LOL