Hi!
Below is the reply that I got from Yahoo! customer care. So no other option than replace this forum. Andreas, what about a web forum on your site? Has it got sql service?
Anyway I will check the possibility to resend all recent messages to a new yahoo maillist. I think YAM and Arexx could make wonders
Thank you for writing to Yahoo! Groups.
I understand that you have accidentally set your "airsoft_hollywood" group to have a "Closed" Membership type and now wants to change it.
I regret to inform you that if a Yahoo! Group was created as a closed group -- or it has been changed to become a closed group -- it cannot be changed to an open or restricted membership. This is to protect the privacy of the members within that group.