First Time Home Buyer Seminars - Do They Work?

I figure if the folks on AR don't know then nobody does.

I 'm thinking of hosting a first time home buyer's seminar.  I'd like to know if folks here have had success with them.  What worked and what didn't?  I'm thinking of holding my first 1st time home buyer's seminar but I want to make sure I: 1) Do it right 2)Get enough people to attend 3)Avoid any pitfalls those who have done this before encountered.