help with modifications of search php script

I have a turn-k meta search script. The script consists of a core and add-on engines. These engines are small php files that allow me to search the major search engines and list them on my meta search site. The scrips works fine. I have all the search engines i need. However, I want to be able to search for audio and video results in stead of web results that i do now. I need help as soon as possible to make the minor modification ofthe engines files. I think it is a minor job for someone with a good knowledge of php. Howver i must have it done immediately