I think posting only to 100 biggest TGP is not the best idea, especially whan you are a newbie. Biggest TGPs won't list you,
it's much better to submit to all possible TGPs, you never know from where you can get signup.
Try <a href="http://www.chameleonsubmitter.com/php/banclick.php?ref=2551">Chameleon Submitter</a>.
It will post your gallery not only to biggest TGPs, but also into ~1000 of other smaller TGPs. You have nothing to lose - only get some extra SU
