There is a forum associated with a social group here that is specifically about DBT......thought you might be interested. They also have a weekly chat regarding the DBT, but not exactly sure when it is.
Here is a link to the forum...many good discussions on some of the concepts in reading through the threads:
http://forums.psychcentral.com/forumdisplay.php?f=98
My psychologist suggested that I might get into their DBT group when the first group starts up again. It just started the last time she had mentioned it.....so in a few months. I am usually good at making sense out of things, but haven't been really successful with reading the DBT inforation & making sense out of it either.