How do I connect a TDK-Lambda Genesys power supply to matlab through IVI communications?

I have a TDK-Lambda Genesys power supply and want to control it through ivi communications. I have instrument control toolbox installed, and I also installed an IVI-COM/IVI-C driver from TDK-Lambda's website. The power supply is properly connected via RS-232 serial to a COM port on my computer.

http://www.us.tdk-lambda.com/hp/product_html/Drivers/drivers_6.htm.

In tmtool I can see the driver under Software Modules with Name: LaGen and Physical names: Output1. I assume that this is not a preconfigured driver, so I need to know how to convert this IVI driver to a Matlab IVI Instrument driver. I tried using the makemid('driver') function but I'm not sure if I'm getting the driver name correct. The following error occurs.

>> makemid('LaGen')  
Error using serial/fopen (line 132)
The specified driver could not be loaded.