Piping Mail

[Desdinova]

I heard there was a way to pipe incoming mail through a program.  Does anyone
know exactly how to set this up?  I'd like to write a program to automatically
reply to senders to let them know when I'm on vacation, and when they can 
expect a reply.
Or is there already such a program?  
Just fishin...
Thanx in advance.

--
Jawaid Bazyar               | This message was posted to thousands of machines
Junior/Computer Engineering | throughout the entire civilized world. It cost
jb10320 at uxa.cso.uiuc.edu    | the net hundreds, maybe thousands of dollars.