Okay, I found this service:
http://www.freeconference.com/Reservationless.aspx
The only thing is we would have long distance charges on our phones if we call on land lines. I for one have free long distance on my cell. If we called late night or weekend, my cell phone would be free. How about yours? Any interest in checking this out??
We could schedule a specific time and whoever wanted to join in could.
I was in a conference call at work today that worked like this service, and as long as you can get a good phone connection, it works well.
__________________
Marilyn 
If anyone would like a free Bible Study CD or book entitled "Searching for Truth", PM me with your mailing address and I'll send you one. "And you shall know the truth and the truth shall set you free." John 8:32