How to I change the link associated with the "or Ask a Question" button?

Hello Everyone,

I'm trying to change the link of the "or Ask a Question" when the user is not logged in. When the user is NOT logged in, the button automatically takes the browser to the registration form. I'd like to modify this so that is takes the browser to an article or page with "instructions" (to either login or create an account). The attachment shows a screenshot of the button I'm referencing.

Please advise, thank you!
Todd