[HelpDesk] Helpdesk question via web

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Form data:
  Name: Tad Mikiel
  EMail: tmikiel at videotron.ca
  OS: vista 32
  UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506; .NET CLR 1.1.4322; .NET CLR 3.5.21022)
  IP: 74.57.123.139
  Time: Thu Dec 20 21:33:38 2007

Hi,
This is a beginners question.
How can I create .dat files?
ie what CAD software do I need?

Thank you