Adding Google AdSense for Search to search.php

[NineToez]

Basically, I tried modding my own search.php file with no success in attempting to add a category specifically for Google AdSense for Search when somebody goes to advanced search. Ideally I'd like to add the category right above 'Search Forums' and just have Google's search box there all on its own. I'm pretty sure that this is a simple mod or code, but I just gave up on trying it myself since I was just getting errors.