From PGP to GPG4WIN

Hi All.
I have to migrate my installation from a 32 bit server to a 64 bit server (MS 2008).

The problem is that the PGP (2.6.3i) does not run (even in compatibility mode).

So i’m looking for another software in order to replace it and I found GPG4WIN.

To make a test, I import in GPG4WIN the same key i use in PGP and I encrypt the same file.

But when i compare (binary check) the two file (one encrypted from PGP and one encrypted from GPG4WIN), they are different. Infact the people wha have to decrypt the file is not able to decrypte the file i create with GPG4WIN.

What should i have to do?

Thanx to anyone can help me!

Cristian