Currently my client has GW message v1.04 running. I would like to install
GW Messenger v2 on a new NW 6.5 server. Can I install another messenger
server on the same container while everyone is still using the old server.
After ensuring the new server is up and running properly, I tell users to
start connect to the new Messenger the next day and download the new client.

Or it would just be easier to down the GWM server and install after hour?