Yes there are but it's not exactly an infopath but you can with
infoview (
www.infoview.net)see an infopath on your pocket pc ( I don't
have try because i don't have a pocket pc (but there are no reason for
that don't work))!
I have hear that the next version of infopath inculde a possibilty to
see on your pocket pc. But I'm not sure!
