If you change it on your Account page, it should be changed everyplace.? I haven't done this, so can't guarantee it, but according to the Wiki page here, it should be a snap.? Maybe someone that has can verify before you change it, in case there are any 'gotchas' to watch for.
Duane
--
Help:
/static/helpGMF's Wiki:
/g/GroupManagersForum/wikiSearch button at the top of Messages list
A few site FAQs:
/static/pricing#frequently-asked-questions