SpiderPhp

Web designer kind of stranded me. I have ftp access and dreamweaver.

I have a PHP web site that I wrote. It uses Authorize.net to process payment. I want to start an affiliate program but I don’t know how… There are plenty of scripts, should I use one of these? If so, which one?
Should I build my own? If so, could someone direct me to a site to get started?

I need a PHP script that the user will pay to buy items on the site.
I need a script where the user will pay £X for a .pdf which they will get when the transfer is complete. Is there one?

I’ve been unable to turn anything up in google

I’ve been unable to turn anything up in google

I’ve been unable to turn anything up in google

Is there a PHP code to save the source code of a given site as a string?

i’ve used drupal and joomla before for other things but which one (taking new suggestions other than drupal and joomla) would be the best for a corporate site?

i have did one site by php and now its live on internet ..this site working in cgi server api module but need to run in Apache server api module .
so please help anybody and what can i do for running in Apache server api.

Which is the best site(s) to know the walk-ins in MNC for PHP web developer?