Yup. Exact source, else you'll get nailed for plaigarism. You would use the corporation's name as the author. I'll give you an example for the following page:
http://support.microsoft.com/?kbid=325379 325379 - How to Upgrade Windows 2000 Domain Controllers to Windows Server 2003. July 30 2003. Microsoft. January 22 2004 <
http://support.microsoft.com/?kbid=325379>.
Edit:
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Use the following outline for a referenced url in a bibliography.
Article Title - appears in the very top bar of your browser. [Date File Was Created -- using format (Number Month Year - no commas in between numbers and month)]. Company/Author/Organization. [Date File Was Accessed - using similar date format used for File Creation Date]. <Complete URL to exact page>.