I have noticed that some of the providers require presreening before they will even talk about setting up an appointment.  Does anyone out there know of/recommend independent services that can do this?  I have heard that some independent services will do a prescreening of hobbyists and which will serve as a referor if background screening is required by a provider.  Any advice?

you might be looking for www.roomservice2000.com

I've seen some references to www.roomservice2000.com.  Is it worth it?  Do providers, in general, accept this as a reference?

from what i have noticed it is what they prefer. you have nothing to lose