Allow other file extensions to be included in indexing search

It is often that I do searches for text in files, like a method use in a PHP file, or maybe something in a java file. Regardless of the situation, Windows Vista has a very limited number of file extensions flagged for full text searching, which causes you to get 'no results' when you know there are some.
Open Control panel and type in 'indexing' into the search box (or you can do this from your start menu, but many people turn it off).
Select 'Indexing Options'
Select Advanced Button
Select 'File Types' Tab
In this list you will see a list of extensions. When you click on most of them, the bottom radio button will change from 'index properties only' or 'index properties and file contents'
Honestly, index properties only is pretty useless for what most people will use search for (i.e. really only search by date).
Uncheck a box to have it removed from search. This can be done for a variety of extensions that honestly, you dont want in search anyway. It will actually help your results.
Change the radio button to 'index properties and file contents' to have these file types included in your searches (should be set for word docs, etc and any other text-based files you search for)