Registration Link

Hi there,
I’m sure this is really easy, but I can’t figure it out. haha.

I want to change my “Register” link for my WordPress Homepage Blog to the registration page I’ve set up for my forums, and also my forums… otherwise people are just registering for my homepage blog and not really being able to participate in the forums discussions and stuff… and i know that my members don’t want to have to register for all my different blogs and my forums as well.

So what I’m asking is:
How do I change my Registration Link in my META Part of my Widgets?

Thanks!