selective forwarding

If an age old question, please direct me to the age old answer, but I 
wanted to ask if there was a way to forward only SOME messages (based on 
header contents).  It doesn't have to be very creative, just work.

thanks
TjL
--
Timothy J. Luoma                        
luomat(_at_)capitalist(_dot_)princeton(_dot_)edu (MIME fine!  NeXTMail if 
necessary)
476tjl(_at_)ptsmail(_dot_)ptsem(_dot_)edu (UGH!  DOS!  Yuck.... Don't use this)
"If I understood the man page, I wouldn't have asked the question."