Does Cpanel have as a application... keyword link script?

A PHP script to do this wouldn't be difficult at all. You just read in the contents of the page, do a str_replace with the words you want to replace and the links, and then spit it out. You could even store the linked page and use that instead of doing the ads dynamically each time you serve the page.

 

No, I don't. If you really need it, I'd suggest coding it yourself. Otherwise, try Google, and see if there is anything anywhere about it. I'm sure there is somewhere that does it, as so many people seem to use it now.