I am trying to use the visa library to deploy a test program. When i use the visa library on my computer, the app works fine. When i deploy the program to the test machine, it says that visa is not properly installed or not installed at all. What do i need to use the visa application. I am using the visa development drivers version 4.2. When i deploy the program i am installing the nationalinstruments.visans.dll. the application is written in C#. the test machine is running XP and has the 2.0 framework on it. Thanks.