[z3-five] Plone Tool without acquisition

[Dennis Schulz]

> - The right way to solve your problem would be using a local site 
> manager. Even if your tools are not registered as utilities, you can 
> get hold of the site root and therefor of the tool without using 
> acquisition. Plone 3.0 might give you some hints how to set this up.

I am not familiar with the Plone 3 code.
Can anyone point me to an example where  I can see how to set up a local 
site manager?

I registered

 <five:localsite
         class="Products.CMFPlone.Portal.PloneSite" />
 
What is the easiest way to get hold of the site root so I can use the 
Plone tool without acquisition?

Regards, Dennis