Ok,
I tried through the obitalk web portal and couldn't figure out how to do it. So, I dialed in to the url 192.168.10.101 and changed the items you suggested, saved changes.
I got a message saying restart the system and the changes would take place.
I didn't know WHICH system it was referring to, so I restarted the browser, tried a test call, unplugged and replugged the obi110, tried a test call, restarted my computer which I'm sure had no effect. nothing changed.
I can still make a direct call from the analog phone I had previously associated with my original gv account. I verified that the call is still coming from the original gvoice account
Btw, I had already made an outgoing call in the new googlevoice acct from the browser, so I think that gvoice account number 2 is ready
What's the answer here?