EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT NAME OF CORPORATION STATE OF INCORPORATION - ------------------- ---------------------- Clearwater Acquisition Corporation Delaware Lafayette Acquisition Corporation Louisiana Realty Acquisition Corporation Delaware SPIALA Corporation Delaware SPIANTONIO, Inc. Delaware SPIAPT, Inc. Alabama SPIAPTLA, Inc. Delaware SPIBILE, Inc. Alabama SPICLIFF, Inc. Delaware SPICOM, Inc. Alabama SPICOMLA, Inc. Delaware SPIDAY, Inc. Delaware SPIDELA, Inc. Delaware SPILAF, Inc. Alabama SPILAKE, Inc. Delaware SPILAN, Inc. Delaware SPILAND, Inc. Alabama SPILOT, Inc. Alabama SPIMALL, Inc. Alabama SPIMALLA, Inc. Delaware SPINAP, Inc. Delaware SPINELLON, Inc. Delaware SPINO, Inc. Delaware SPIPAL, Inc. Delaware SPIPOWER, Inc. Alabama SPITON, Inc. Alabama SPITOWN Corporation Delaware SPIWACHEE, Inc. Delaware SPIWARD, Inc. Delaware