6420 PHPBB2 Upgrade and Spam Module

Hi All... Right I have two websites running phpbb2 forums (identical versions) I am basically receiving so much spam to these boards that it's become out of controll. For some reason my phpbb version does not have the (type the code from this image you see) feature so spam bots can get past this easily... Also I've heard some spam bots can get past this precaution now fairly easily... so what I need is the following: Upgrade to latest phpbb version for both sites (should be very easy as i'm already running phpbb ver 1.2x Then for the image feature to be activated within the control panel, and then for any modules that you recommend that will cut down on the spam or stop it completely to be added. Thats it :) If my budget is way under please just bypass it, but I'm guessing it shouldn't cost too much for this as it's only an upgrade and a couple of mods installing. Oh the websites are: [login to view URL] (first one to be done) [login to view URL] And necessary backups of files would have to be done before upgrading for safety :) Thanks a lot Best Regards Anthony [login to view URL]