Tiger Tamer is yet another hidden preference setter with a few unique features. No frills, just a bunch of handy tweaks in one place. Among the run of standard settings, Tamer will let you disable the Dashboard and the Spotlight interface and server, and edit the spotlight search rules. All told there are over 80 settings to play with, about a dozen of which may be useful and a few of which are hazardous.
As noted by our intrepid reviewers, this program can break your computer and there is no tech support. This program generally edits preferences files to unable buggy features in Apple software, which is fun but a bad idea. So let me agree with the reviewers, and recommend against this software unless you know what you are doing. Try Clix for a good way to start learning, or another preference setter for safer features. And read the help by clicking the pink question mark and mousing over items.
What's new in Tiger Tamer
Control screen capture settings in the Spotlight (SystemUIServer) tab.