Algorythm for very fast disk search

I want a simple WinForm Application that will have a button an edit box and and a list box. I can type a search for a file into the text box and when I hit the search button it will find matching files on the c: drive and show the list in the list box. The trick is that this must work within 1.2 times the search time for Find On Click from 2 bright sparks: http://www.2bright [login to view URL]