I have went on a diet and started working out. I've been down this road before and know that it is more successful if you belong to some type of support group. Know any yahoo groups -or an groups- you can recommend for me to join?

If you are female, check out Pink Dumbbells - http://www.pinkdumbbells.com
It's a community of women dedicated to living healthy lifestyles which include clean nutrition and exercise of all types. It is not plan-specific, so you don't need to be following a particular diet or regimen in order to join any of the fitness challenges or support groups. You can also keep a journal there and get comments and support from the other members.
If you are male, I recommend the forums at JohnStoneFitness.com - http://forums.johnstonefitness.com/
JSF provides a lot of the same support and good information as PDB, but is geared more towards men.

I'm a member of the group Fitness and Weight Loss: http://health.groups.yahoo.com/group/Fit...
The moderator is a personal trainer and has lots of good advice.

You could always try weight watchers. They have a chat line but I believe they have a fee for same. I talk to a close girlfriend and find between meetings family and friends help a lot. I've just lost 24lbs. in 7 weeks so I really know what you are going through. If you wish to e-mail me, I'll try to encourage you. Best of luck, just remember, SUMMER IS COMING.

I just make friends with the people at the gym and we all go at the same time. When one of us doesn't show up, the others give her a scolding. THAT makes you want to go.