SETI is Search for Extra-Terrestrial Intelligence. The signals from amny radio telescopes must be processed in a search for patterns. This is incredibly computation intensive. Thus SETI@HOME was established which requests users with 'always on' Internet connections to load software which, in the background while other processes aren't taking place, works on small segments of these analysis problems. The computers are automatically azssigned their small sections and report back their results. The hope is that a massive effort of multiple computers will lead to a time and cost effective was of doing this analysis.