Auto signature update?

[HabboInn]

I have recently added a new signature to my profile on my forum, and I want it to show up on all of my posts. However, it only shows up on the new posts.

I understand that I could edit all my posts and add the signature on. This would be fine, except I have over 1000 posts and do not want to edit all of them, just to add a signature onto them. Another problem there would be the fact that it would not automaticly update when I change it.

Is there an easy way I can add my signature to all of my posts, but still have it automaticly update?

Thanks.