I prefer EasyFind to Spotlight. Thus, I wanted a quick way to do a search with EasyFind, so I wrote an AppleScript to work with EasyFind and Quicksilver.
Save this script to your user's Library -> Application Support -> Quicksilver -> Actions folder, and name it EasyFind.scpt. You'll need to have "Enable access for assistive devices" enabled under Universal Access in System Preferences. To use:
Mac OS X Hints
http://hints.macworld.com/article.php?story=20060108112658191