Need Opinions On Offline Buiness

I need your opnions on an offline business idea that popped into my mind. About two months ago my girl friend had a severe case of "pink eye" and wanted to go to an opthalmologst. She belongs to a church with about 500 members and looked thru the church directory to find one because she would have preferred to go to a member of her church. After lookig thru the entire directory she discovered that there were no opthalmologists that belonged to her church. It would have been much simpler if the church had a "yellow pages" directory of their members. I think most people would prefer to do business with a member of their church.

What do you guys think of developing a business directory for churches? The directory could be published for a couple of dollars each and given free to the members. The members would be charged a fee for entering their names in the directory. The church could be given part of the fee for promoting the directory and collecting the entries and the fee. I haven't completely crunched the numbers yet, but I think the fee could be in the $60 - $80 range which I think is very reasonable.

What are your opinions on this?

Thanks,
Bill