I constantly read about people running "seti" for x number of hours stable or at certain temps. Probably a dumb question, but what the hell is it and where can I get it?

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PIII 700@1001(7x143)
Abit BE6-II RAID
256mb Micron PC133
Radeon 32DDR (190Mhz)
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19" LG Studioworks
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