[Zope] Service NT INSTANCE_HOME

Hi, The very good Howto at "http://www.zope.org/Members/4am/instancehome" describe a nice solution to start Zope with an another INSTANCE_HOME . However, this solution don't seem effective with the Zope NT service : If you create a INSTANCE_HOME with var, Extensions, import, Products, access entities, and you declare INSTANCE_HOME in start.bat, Zope find correctly your INSTANCE_HOME when you manually run start.bat. But if you start Zope with a service it does not work even if you change the string INSTANCE_HOME in the NT register ? Is there a solution to use an another INSTANCE_HOME and start zope with a service ? FR