sonomasnap,
Check out
http://www.sitepass.com/
As lEricPl mentioned, we (ARS)
www.adultrevenueservice.com have taken SitePass in house, and will be glad to assist in any way we can to get you started.
Test your traffic with multiple AVS programs to get a clear picture for yourself. Let us all know how your doing after a while. Thanks.