Not that I know of. There used to be a separate option for "Default page for visitors" and "Default tab for Fans". Not sure why they removed it, and wish they didn't.. but I don't know of any ways around it. Obviously, this isn't a JFBConnect issue, but if there was a way around it we could implement, we gladly would.
A quick search of Google found a lot of other users with this question, but no real solutions.
Good luck, and definitely let us know if you find anything out,
Alex