Custom Actions are for advanced programmers; they require C++ or Dephi and knowledge of Extended MAPI. You don't need a custom action for this, though, just normal VBA programming. You can drive it from the ItemAdd event, monitoring the Inbox -- see http://www.slipstick.com/dev/code/quarexe.htm for a simple example.

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Sue Mosher, Outlook MVP
Outlook and Exchange solutions at http://www.slipstick.com
Author of
Microsoft Outlook Programming: Jumpstart
for Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> I would like to set up a rule in the Rules Wizard that
> automatically creates and saves to a text file on my hard
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> documentation on what a Custom Action is or how to create
> on.