Difference between NI-VISA and NI-VISA Run-time Engine

[RFurball2]

I current use MSExcel VB 6.0 to control test equipment. I current use native NI commands such as ibread etc. I want to add drivers to simplify my interface and desire to download NI-VISA. Going to the download I see NI-VISA Run-time Engine and NI-VISA API/Code Library. Which one do I need? I want the one that comes with the instrument driver files. I have used these in the past but I don't remember how I set it up.

Thanks

[MXI Master]

Rfurball2,
You will need the API/Code Library to use the driver in the development/debug environment, this driver includes the run-time environment support as well. If you were building an executable and only needed functionality at run-time, the run-time engine has a smaller foot-print and could be used on a deployment machine.

As for the instrument drivers, you will need to download them from the Instrument Driver Network where you can search and download the drivers that you need for your devices.