changing pref (newbie)

[Matthias Odisio]

Hi,

I've created a pair of keys with an older version of gnupg (1.0.6). 
Before starting using actually the system, I've upgraded to version 1.2.1.
Is it possible to change the preferences of my public key (--edit-key, 
showpref) so as they are in accordance with the new algorithms, the new 
features, etc. ?
By the way, how to change from options to gpg.conf ? Is there a conversion 
tool or a simple "mv" could do the trick ?

Please cc me answer since I've not suscribed this mailing-list.
Thanks,
Matthias