[mary-users] As the computer default voice?

[Simone Ramacci - Simosito.it]

I'm sorry if someone have asked what I'm going to ask, but I've googled 
a lot without finding anything.
Is possible to set one of the OpenMary's voices as the computer's 
default, on WindowsXp?
I really like it but I need it to read web-pages (by a Firefox add-on  
of course) and to learn English pronunciation.
I don't want to use Loquendo again!
(I usually use TTS into AmericasArmy too).

Please help me!

(I apologize if my English isn't good, but I'm Italian)

RSVP

Simosito