There is real money here. As a result, a wide collection of very client-centered research resources have grown up to deliver to this market. Your research may take you into competitive intelligence and private investigation - talking to competitors, customers, suppliers, past employees and more. Let's start with the obvious.
Companies publish information about themselves - some of it quite useful and factual.
Look for a company website. Use Altavista to find a specific commercial website. Alternatively, use Debriefing , a meta-search engine optimized for finding names and named websites. If you still have difficulties, consider a local or national search engine. Use the SearchEngineWatch regional list , Search Engines WorldWide or SearchEngineCollossus .