This question is asked a lot. When you are a member, you are a member of all divisions. So technically, you've been a member of the strat division the whole time you've been a member.
Off-topic: Weren't you a G?
No...
Send a PM to one of the Strat DL's (Matt with a Catt, Angreifen, Milwaukee) and the CSS DL (iamevilbear) letting them know you want to be in the CSS division.