Rapidshare is one of the best File Sharing Network. However, they do not provide any facility for searching files stored in their servers. However, is an alternative to this, you can search rapidshare (and some other infamous file storing services) for downloadable files with the name you are searching for.

Since this service is not directly from Rapidshare guys, these files are not scanned for viruses or other such malwares.

Search Rapidhsare files here.