Hey kotwik,
Trying to instantiate the class that you referenced in your post in LabVIEW might be a bit difficult. The easiest method would probably be to use an ActiveX server (since LabVIEW 6.0 doesn't support .NET) to call a VBScript Server and running VBScript from LabVIEW. Something similar to
this post could be used. Making a DLL call to a driver would be much much easier, however finding out which DLL and function will probably vary from one driver to the next.
Repost if you have any specific questions about this issue.
Andy F.
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National Instruments