As far as I know, the only driver that works with a Mr. Mysza is the driver that came with it. I HAD* one of these devices, and I remember trying a few because I wasn't real satisfied with the performance I was getting, and none of the other drivers worked.
* I say I HAD one of these things... I think I still do, but I can't find the hardware OR the driver disk anymore. I either traded it for something else and have forgotten, or put it somewhere "safe" in which case, it'll be lost until at least 2058.
I should have a backup of the files needed on one of my A4000 archives, if someone knows the filenames to look for...
ETA: The place to contact might be Mr. Hardware computers, as I think they made the silly thing.