Just go to Google.com and punch “site:rapidshare.com” followed by:

* “inurl:pdf” for Ebooks in PDF Format
* “inurl:avi|wmv|mpg|nva” for Movies
* “inurl:mp3|ogg|wma” for Audio Files
* “inurl:exe” for executable application
* “inurl:zip|rar|7zip|tar” for RAR, ZIP, 7ZIP or TAR compressed archieve

Examples:

If your searching for Google Earth in ZIP format, then you must search for “site:rapidshare.com inurl:zip google earth” (obviously without the quotes)

Similarly if your searching for XYZ video, then it should be something like “site:rapidshare.com nurl:avi|wmv|mpg|nva XYZ”