Looking for free 64-bit PGP command line tool

I am looking for a free version of PGP to run on a 64-bit Windows 2003 server.  I need a command line tool to automate the encrytion of files using batch files.
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gtkfreakConnect With a Mentor Commented:
http://www.gpg4win.org or http://www.gnupg.org available in EXE and source code.
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