I'm not sure which version of ZD I am running. I have no tray icon because of modifications made to config files ages ago to work around a problem. Properties dialog gives:

File Version: 1.9.0.3299
Product Version: 1.9.0.1
BuildID: 2009011216

application.ini file shows:

[App]
Vendor=VMware Inc.
Name=Zimbra Desktop
Version=0.9.1
BuildID=2008080512
ID=prism@developer.mozilla.org

README.txt shows:

1.0.4 (build 1833)

So which version is it?

I want to upgrade to 7 but I read:

"Zimbra Desktop 1.0.x can not be upgraded to Zimbra Desktop 7.x" so I need to know.

What can I back up before installing in case of disaster?