[Xastir] Converting State GIS Maps

[David P. Goncalves]

I know this is a little off topic, but with all this discussion about
maps, maybe the answer will be helpful for somebody else.

I am trying to use the lovely, free ESRI maps from the Massachusetts GIS.
(www.state.ma.us/mgis). These are in MA State Plane coordinate system
(FIPS 2001), so I need to convert them using the shpcs2cs utility.
However, the syntax that I have been using is not working:

shpcs2cs +proj=nad83:2001 +datum+nad83 +to +proj=latlong +datum=nad83

Any hints?
Thanks for all the help with my previous questions.

Dave Goncalves