listeners and virtual hosts

Hi all,

I have Apache connected to Tomcat 5.0.28 on a linux server.
I have setup virtual hosts in my tomcat server.xml config file
specifying a domain name for each webapp that I host.

Problem:
The tomcat container cannot find the listener classes, such as
ResourceManagerListerner where I specify all my application parameters.

Can someone give me a configuration tip to solve this problem.

Thx, Lamine.