I have no experience with superBB on SME, but the recent thread on phpBB are worth looking at. If you aren't too invested in superBB yet, you might want to have a look at
www.phpBB.com -- version 2.0 just came out, and it is really nice. There are a couple of very good How-tos for SME available, or soon to be available (*cough, Dan B. cough*), and they will have you up and running in no time.
Best of luck,
Dan G.