In "NI eSupport News Vol. 6, No. 11 - November 2002" you brought following, but the link does not work (wrong subject). And can't find the subject on your web. Got another link??
<==Controlling which Version of LabVIEW Opens When You Double-Click a VI in
Windows==>
If you have two or more copies of LabVIEW on one computer, you might notice
that when you double-click a VI in Windows, the last version of LabVIEW you
closed will open. The following KnowledgeBase document describes how you
can double-click a VI and have a specific version of LabVIEW open:
http://digital.ni.com/express.nsf/express?openagent&code=esup110211