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I'm a Linux newbie who has fallen in love with Ubuntu.

This is my 2d attempt to post this question.  Please forgive me if I UNintentionally posted it more than once.

I started with Ubuntu 10.10 32-bit, and I think I need/want to upgrade to Ver. 10.10 64-bit, so that I can install Wine, so that I can run my favorite voice recognition software, Dragon Naturally Speaking ("Dragon").  Dragon can be run in a 32-bit environment, but it's slow and more error prone in a 32-bit environment.