The service installer and monitor files are part of the Tomcat download.
You must use the files for Tomcat version 6.0.35.
To obtain the files and add them to Studio:
A sample URL for the archive directory is: http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.35/bin/
If you are not using the bundled JVM, and your JVM is 64-bit, then you must download the 64-bit version of the zip file (apache-tomcat-6.0.35-windows-x64.zip).
endeca-portal\tomcat-6.0.35\bin