how to reply with textfile?

Hi,

I am new to this list as well as to procmail... I was wondering how a 
procmail recipe would look like if I want an autoreply sending out a 
textfile depending on the from field. 

Am I on the right track, trying something like this (which of course 
doesn't work):

:0
* ^From(_dot_)*someone(_at_)domain(_dot_)com
| cat $HOME/somefile.txt ) | $SENDMAIL -t

Any help is greatly apprecieted.

Tomas Karlsson
webmaster(_at_)iimagers(_dot_)com