I read:
I'm working with Windows and I have a problem with PD. I'd like to call pd | anotherProgram
I just might add, why on earth you want to do that, pardon me, but go use sockets or textfile or OSC or whatnot to get the messages over instead of using [print] or post or is there a reason this won't do what you're trying to accomplish (producing/parsing a log of pd's startup messages f.i.) ?
BTW your mail account seems to have some weirdness (or the MTA just denies relaying from my adress)
regards,
x