There is no need to do this. If you have a GroupWare license with upgrade protection still in place, this license will work with the new Outlook Connector. If the upgrade protection on your GroupWare license expired on or after the date that the Outlook Connector was released (May 3, 2005), you will need to renew your GroupWare license before you can install and use the new Outlook Connector.
Select "MDaemon GroupWare" from the "Add or Remove Programs" list in the Windows control panel, then click the Remove/Change button to being the uninstall.
First you need to uninstall GroupWare from the client workstations. This will not cause the loss of any data, as it is all stored on the server. Once you have uninstalled GroupWare, install the new Outlook Connector either by logging into WorldClient and selecting Outlook Connector from Options, or by running the OutlookPluginInstall.exe file that will be located on the MDaemon server in the \mdaemon\worldclient\html folder.