my forum is being locked down, will not affect current users

With many spammers getting in, the forum being outdated, and them not being used much. I have locked out new user registration, already registered peeps can still post. I really have no clue on how to upgrade it currently, nor want to with the attachment mod and others I applied a while ago..

My personal gallery is wedged within the forums cuz I thought I could do some intergrating but it never panned out. Gonna redo that as well. Look for a new one comming soon.