Can't run 2 version of JRE when launching from IE shortcuts (one IEXPLORE.EXE process)

We are using IE 6.0 SP2 on Win XP SP2 and have an immediate need to run two versions of JRE (1.4.2_13 and 1.5.0_15) at the same time.
 
We have no problems if running each version of JRE simultaneously from a separate session of IEXPLORE.exe. The problem arises when trying to launch the second app (regardless of which JRE version it requires) using the same IEXPLORE.EXE process (ie. launch from a desktop shortcut or a link on our Intranet if the page is already open). The problem is tied to JRE because we don't get the error until JRE tries to load.

The errors are different depending on which version of JRE is loaded first. See attached for the errors received after launching the various apps.

Is there anything we can do\change to 1) run two versions of JRE in one IEXPLORE.EXE session  or 2) change the link on our Intranet to force a second IEXPLORE.EXE to open. I know you can create a new desktop shortcut to first call "C:\Program Files\Internet Explorer\iexplore.exe" and then the link, but wed rather not go that route.

Thank you for any assistance you can provide!!
Errors.doc
MedCentralAsked:
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Bryan ButlerCommented:
Are you saying opening a new browser, similar to the way "ctrl-n" opens a new browser, does not let you run a different JVM in the new browser?  I'm not sure exactly how to do the "ctrl-n" in code, but I can search to find out if you'd like.
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CEHJCommented:
Not sure if what you're attempting is supported. It's more likely to be supported using Web Start though, i'd guess
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jcimarronCommented:
MedCentral--You pick which version of Java to run in IE Tools|Internet Explorer|Advanced tab|Java section.  If you show both versions of Java can you check both?  Apply|OK. Reboot.  
I only have one version installed (the latest--version 6 Update 10) so cannot try this.  Have you tried using just the latest?
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MedCentralAuthor Commented:
We were able to get a "fix" for this issue which modifed the JRE properties file the application was using to accept JRE 1.5.0_15.  Thanks for the replies, though!
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jcimarronCommented:
MedCentral--Please tell us the fix so we all may benefit.  Thank you.
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