No, it stops releasing at the expiration date, but it still shows up on your account page until you activate another bonus.

thank you both - I had thought of just playign some, but I egt so little time to play these days and I pick tables selectively, i would have hated to go through that process for nothing. Plus, when you are aware of a completely all-knowing groups of intelligent poker peopel liek this, why not ask

Thanks everyone,
Steve