[Mailman-Users] Pop up

[zzizzle.com]

Does anyone know how to either prevent the subscription-confirm window 
from popping up and just confirming the subscriber once they click on 
the confirmation link, or how to edit the html of the page that pops 
up?  I am sorry to ask this more than once but I am new to the system 
and don't know any programming, just html.  So people's answers so far 
have been cryptic, at least to me.

Thanks!
Jonathan