I am running tomcat 6.0.18 as a windows service. In the service applet the jvm is configured default, i.e. it is using jvm.dll of the JRE.
I am trying to monitor thi
Here's the prescribed way for changing jvmoptions & interacting with the service:
http://tomcat.apache.org/tomcat-5.5-doc/windows-service-howto.html
I would try going into your registry at HKLM/Software/Apache Software Foundation/Procrun 2.0//Parameters/Java and editing the "Options" multi-string value directly.