Tomcat 5.0.16 in XP Profesional

[foongkim]

Dear all,
I have install  Tomcat 5.0.16 in my XP Professional with JVM1.4_02

I wonder, do i need to set the "JAVA_HOME" and "CATALINA_HOME" in the 
Global Environment Setting ?

I know i have to do this at Win98 or Wind95, but not sure is it necessary 
to do it in XP or more higher OS version?

This is because i have this error when i am trying to run Eclipse with my 
Tomcat,. I got this error,

 } catch (Throwable t) {
     if (!(t instanceof SkipPageException)){
       out = _jspx_out;
       if (out != null && out.getBufferSize() != 0)
         out.clearBuffer();
>>>>>      if (pageContext != null) pageContext.handlePageException(t);
     }
   } finally {
     if (_jspxFactory != null) 
_jspxFactory.releasePageContext(pageContext);
   }