[Zope] Zope 2.5 upgrade help!

Hello I have tried to install a second version of zope on my Win2000 pc. I had the Zope 2.4.3 running as a service before. I have: - stopped the old zope service. - installed the 2.5 version in ANOTHER folder. Now it's a mess: - I can manually start both Zope services(one at a time of course), but if I press the restart button (zope interface) it seams zope doesn't restart. This on the old and new version. The restart was working well on the old(2.4.3) version before the 2.5 install. this is annoying . what's the solution? How to remove a service under win2000? Thanks Gilles