Hello,
Even if a driver doesn't exist for the instrument, as long as it publishes an API for communicating with it, you should not have too much trouble getting the functionality you desire by writing VISA commands directly. If you need help with this definitely repost! If you can post an example of the syntax of a command(and exact string to write which your instrument responds to) and the corresponding expected response, I will be able to get you started coding pretty quickly I think!
I look forward to hearing back from you!
Regards,
JLS