In order for MKS to show up in the list of providers, the MKS integration to Visual Studio must be installed/enabled. This integration allows development programs (like LabVIEW) to use a common interface to communicate with MKS. I believe you have to enable the integration from within the MKS environment. I do not remember where the menu option is, but once you do this, you should be able to see MKS as a provider in LabVIEW.
George M
National Instruments