Good! LINDAANNB1 , that is what needs to happen--changes. And groups can be very helpful.
Still, bottom line--it's YOU who needs to make the changes, at home, in your daily life, for your whole life. Depending on groups or challenges is a great supplement, but the core has to be YOU.
So, while you are deciding which group to join, make one small change. Build it to a habit. On your other thread, one of the last posters suggests making a list. I'd go one step farther--have you done the "Fast Break" section here on SP? It's a 2-week chance to evaluate what you do--in detail, not in general--to help you decide where to make the first changes. (Maybe take water to work--then, during your sedentary day, you'll HAVE to get up and walk to the toilet--it's a start, right? If your building has multiple floors, you could use a bathroom on another floor--stairs are great exercise...it takes creativity and perseverance.)
If you aren't familiar with ~INDYGIRL's story, and blogs, you'd find her inspiriational. She's lost 170 pounds (I've linked you to her most recent blog, and you can go back from there.) www.sparkpeople.com/mypage_public_journal_
Good success to you, and keep posting.