Thanks!
Hmm, how about checking out Featherweights in Support Groups (for people with 20 or so pounds left to lose; friendly group), or the 20-Somethings (also in Support Groups with great people), and there's a College Chicks thread
here. If you're doing a specific diet plan, they are forums for a lot of those and even one for calorie counters like me.
Don't forget to check out the Exercise forum!
I think you'll find a warm welcome wherever you post, so don't be shy - find some places where you feel comfortable and just jump right in!