[Zope] zope2.7b1 does not start on winXP

Hi, I can't get zope2.7b1 starting on winxp after installing the binary for running *not* as a service (the other option i did't try). I have installed it parallel to a zope2.6., Plone and Active Python 2.2. but that shouldn't be a problem? Any hints what could be wrong, fixed, configured etc. There are no error messages, just the cmd-window closes directly after starting runzope.bat. -- Thanx Elena