Java HotSpot Virtual Machine

A customer has MSJVM loaded on their win2000 server running SP4. In order to run our application, sun java 1.4.2_07 needs to be loaded. After loading 1.4.2_07, whatever java applet I am trying to load hangs. The screen locks up, and the status bar seems like it's trying to load the applet. The same happened when I tried accessing javatester.org, and java.com's testvm.xml. This indicated to me, there is some sort of java conflict.

After much research, I had the customer uninstall MSJVM using the uninstall utility found on the net. rebooted the server, and tried the test sites again. This time we got a little further since the page loaded, but I was prompted to install the JVM again, even though 1.4.2_07 is already loaded on the machine. Researching some more, the customer then ran the registry patch, and I reinstalled java 1.4.2_07 once more. Still no good. In addition, I am unable to bring up the java control panel. all security in IE is set to medium-low. they do have IE Q831167 patch loaded which most customers do not...

To prove that this is isolated to the java on the server, I had the customer access the server from the browser on his workstation. The java application splash screen appeared without any problems.

Right now, I'm at a loss as to what else it could be. any else I didn't consider?

much appreciate any help you can provide..