   SSL
  where do the security features of SSL - in relation to credit card processing - become integrated into a website?  At the webserver level (and thus a matter controlled by the host?)  The ecom package you buy (and thus a matter controlled by the ecom developers)?  What other security features should my web host provide to protect my data and my site from unwanted intrusion, DoS attacks, etc.?also as far as writing PHP scripts goes, do I write the script in with the  tag, or is it compiled somewhere else? 
  SSL needs to be supported by the server (a matter for the host).To ''use'' the SSL, my understanding is (based on what I quickly read on Google, and not from experience) that everything works like normal, only the URL will be be prefixed with ''https://'' and not ''http://''.SSL is served on a different port (default is 443) then HTTP (default 80). I assume this is how the server knows it''s supposed to be a SSL connection and not HTTP, and so nothing has to change in the code itself. 