I just did a search on CPAN and came across this module.
RTF-Writer

I was unable to install it using the GPM that comes with IndigoPerl.
No problem though! I just copied the RTF directory
under the module's lib directory into my c:\perl\lib\
directory and I was writing RTF files!

I hope this works for you.

"Lights, Camel, Action!"
--Stump
A Fierce Pancake(1988) *Charleton Heston*(track 8)