Answer:
Run version.bat from the bin folder under tomcat, you should get something like this:
Using CATALINA_BASE: C:\Tomcat5
Using CATALINA_HOME: C:\Tomcat5
Using CATALINA_TMPDIR: C:\Tomcat5\temp
Using JAVA_HOME: c:\jdk1.4
Version: Apache Tomcat/5.0.28
You can find the tomcat server version by using this command.