[Mailman-Users] Help with mass removal or bulk unsubscribe

[mailman-users at think.co.za]

Hi guys

I need to unsubscribe everyone on one of my lists and then
subscribe in mass again. I have the list for the new
subscriptions, but I don't see where I perform the mass
removal.

Mailman just asks for a file, which I don't have.

Anyone with some bright ideas?

Thanks

Cheers
Hilton