Monitoring memory and thread management for Java 1.4.2_04

Hi,
I have an application which is using Java version 1.4.2_04. The application deployed in Customer site is having some memory issues. There are observing java.exe going 100% in Task Manager. The same application (of higher version)
uses Java 1.5 is not seeing any issues.
Now Customer needs the root cause of the issue and i would like to check the code which is causing the issue. I came to know we can monitor threads and memory using JConsole. Since we are using Java 1.4, i installed Java 1.6 on a remote machine and tried connecting to the problematic machine. But it failed to connect.
i have added the option "-Dcom.sun.management.jmxremote.port=8880" when starting JVM (this i have provided inside ServletExec batch file, ServletExec is my web server).
Any idea how to connect to the problematic machine from remote using JConsole. Or any other tools i can use on Java 1.4 to nail down the problem..
Please provide pointers.
I have another doubt on Java version 1.4, since there were many memory issues, am i hitting any defect in Java 1.4

hari.r wrote:
Please provide pointers.You need to tell you sales/marketing/business requirements people that they must come up with an end of life policy for customers on older versions.
Unless your company has a service contract with Sun you right now, can no longer insure that the VM will remain secure nor even really running.
See the following for the java VMs that you are using.
[http://java.sun.com/products/archive/eol.policy.html]

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