Hi Tamal,
I was not able to find a driver for the Lake Shore 208 Temperature Monitor. If you look at www.ni.com/idnet, I was able to find one for the 218 model Temperature Monitor. Older models of the same type of instrument tend to have a great deal of similarity in the API. I would recommend getting the manual for your instrument, as well as the driver for the 218 model and modifying it to work with your instrument. If you have any more questions, feel free to let me know.
Best Regards,
Aaron K.
Application Engineer
National Instruments
