Chris - you can find some information in this thread...
http://www.greenguysboard.com/board/...ad.php?t=30463
Most of the more popular scripts were discussed there, but it's a long thread so you can zoom in here if you want...
http://www.greenguysboard.com/board/...2&postcount=57
I think most LL scripts do what you asked about, so some folks probably skipped answering just for that reason. Sometimes people seem to get burned out answering the "which script" question. You might get more replies with more specific questions after a little more research.
Simon