trying to tag outgoing mail

Hi,
   I'm new to the list but am having some problems with procmail.  
I'm runnin Sendmail and procmail in conjunction to filter.

What I'm trying to do is tag the end of my mail to a specific user.  
But when I run this through tests I get a funny "To:" line..

Hereis my /etc/procmailrcs/outfilter.rc
LOGFILE=        /tmp/procmail.log
VERBOSE=        on
:0 c
* ^From.*testing
! seawitch(_at_)tr-riscs(_dot_)panam(_dot_)edu       <- forward mail to myself 
for now 

:0
! -f "$@"                                          <- pass along 

Here's my ruleset in sendmail and my Mprocmail declaration..
This is in ruleset 96 and goes to a test account of mine offsite.

R$*<@vsta.com>
                $#procmail $@/etc/procmailrcs/outfilter.rc 
$:$1(_at_)vsta(_dot_)com(_dot_)procmail
R$*<@$*.procmail>$*
                $1<@$2>$3

Everthing seems to be working ok except I get a really wierd "To: " 
field on the other end.. it shows up on the local copy also
To: procmail/etc/procmailrcs/outfilter(_dot_)rcseawitch(_at_)vsta(_dot_)com

Is there any way to strip out the 
"procmail/etc/procmailrcs/outfilter.rc"???

Thanks for any help.
--
Nancy Robison
Unix/LAN Administrator - Univ. of Texas, Pan American
Phone: (210) 381-3300     Fax: (210) 381-2355
Email: seawitch(_at_)tr-riscs(_dot_)panam(_dot_)edu