That's hard coded into the forum software. I could change it, but I'd have to root through about twenty pages of CSS to find it, and potentially break a lot of other things. Plus, and I mean this in general, not toward anyone in particular, there's only so much hand-holding I am willing to do. I wrote out a full step-by-step tutorial on how the forum works here, and that's on top of the built in instructions provided here, all of which are right on the front page.
These links are also provided (and you're urged to read them) when creating accounts. What else can I do? Show up to people's houses and move the pointer for them?