what worked really well was to use the 'clone' function in Azure, so I cloned the member05 web service to member06. So now have two running, the second will try out French langauges.
The clone took about 15 minutes but didn't seem to work, just got a site not available error.
Then following your and another person's advice, I unpacked the upgrade zip file, and using ftp frok my desktop, simply overwrote the exiting files with the upgrade files.
Was then able to browse from within Azure to the install wizard and went from there.
The previous site content/users/extensions were preserved OK.
Definitely a result.
thanks for the guide..