Eclipse error when Adding Tomcat as server runtime environment

When I try to add Tomcat as a server runtime environment in eclipse, I get the following error "No new server runtime environments were found" The way I am trying to add Tomcat is as follows: Click "Window"-> "preferences" Expand "Server->Runtime Environments" Click Search In the directroy browser dialog, navigate to and select my Tomcat dir "C:\program开发者_开发百科 files\apache-tomcat-6.0.26" Click "ok" Does anyone know what eclipse is actually looking for when you tell it what folder to search in? If I knew this, I could troubleshoot myself a bit more. I have tried re-installing tomcat, also installed the next version up (6.0.26) but still eclipse cannot find it. The version of eclipse I am running is - "Eclipse IDE for Java Developers" Build id: 20090920-1017

It works fine for me but i'm using Eclipse IDE for Java EE Developers.