Optimize and secure forum

I run a forum at <[login to view URL]> It uses flat file database (txt), but I also have an MySql server running, if the coder need it. **Lately I have been bugged by some people posting annoying messages in the forum so I would like some security check. ** 1. One IP can only post one message in 10 minuts (make it easy for me to change the value). 2. Make a simple user presence check, etc read 3 characters of an image and write them in a field before the post is published. 3, Make it impossible for others to use My name (PC-Care) in the forum. 4. Make it possible for me to ban IPs og IP ranges. **Also I would like the forum optimized for search engines. ** 1. Enter the topic header as the page title - and after that PC-Care hardware forum 2. Enter the first xx characters as the page description **Change to PC-Care index **Edit the upper left corner so it will changed the date according to the last FORUM posting. (SITE LAST UPDATED DATE) ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform php4 MySql