Code To Search For Files In Directory

point me to some example code of searching for a file, like *.*, or *.pdf, much like the Windows search function. I am at a smaller location, away from the main office, and although I can map a drive or just use to go to the desired location, the connection is too slow to search.

I'd like to implement a search function on the intranet web (at the main office), where it will search a certain directory and its subdirectories and return the results as network links (using the convention); actually it doesn't matter how it displays the links, as long as it shows me where stuff is. That way the search is run on the computer where the originating directories are.