1) There isn't a simple answer to this question.
In general, you can have more than one version of Measurement Studio on the system, but you can have only one version of Measurement Studio on a system per version of Visual Studio.
For example, you can have Measurement Studio 7.1 for Visual Studio 2003 installed on the same system that you have Measurement Studio 8.0.1 for Visual Studio 2005. You cannot have Measurement Studio 7.1 for Visual Studio 2003 installed on the same system as Measurement Sudio 8.0.1 for Visual Studio 2003.
In your case, the answer depends on what part of 8.0.1 you mean. 8.0.1 includes support for Visual Studio 6, Visual Studio 2003, and Visual Studio 2005. Measurement Studio 6.0 includes support only for Visual Studio 6. So, you can have Measurement Studio 6.0 installed on the same machine as Measurement Studio 8.0.1 for Visual Studio 2003 or 2005, but not Measurement Studio 8.0.1 for Visual Studio 6.
There is one more wrinkle to consider. That wrinkle is that Measurement Studio C++ support uses cwui.ocx and cw3dgrph.ocx for it user interface components. In general, there can be only one copy of these files installed and registered on the system at the sametime. So, if you have Measurement Studio 6.0 (for Visual Studio 6) installed on the same machine as Measurement Studio 8.0.1 C++ support (for Visual Studio 2003 or 2005), the versions of cwui.ocx and cw3dgrph.ocx that are registered on your system will be those that shipped with Measurement Studio 8.0.1. This should be OK because these components are intended to be backward compatible. Furthermore, your 8.0.1 license grants you the ability to use the upgraded components in Visual Studio 6.
Message Edited by drohacek on 09-22-2006 08:39 AM