gpg4win: is it possible to upgrade part of it?

[Faramir]

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Well, I have been using gpg 1.4.9 for a some months, and I am quite
happy with it. But I would like to try GnuPG 2, and since I am on
windows, I have to use gpg4win (since it is really unlikely I am going
to compile it myself). But gpg4win comes with both gpg 1.4.7 and gpg
2.0.7, so... is there a way to update the 1.4.7 version to 1.4.9? I have
the files in my computer, so if it is just matter to overwrite them with
the newer ones, that would be easy... but I am not sure if GPG2 uses
some of these files too... if it does, then I risk breaking it if I just
 overwrite...

Best Regards
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