Let me be sure I have this straight:
You have this device
, and the company that made the device only offers Windows drivers.
But you've found a site called totallybonkers.com that claims to have Mac drivers. But somehow this driver for Mac, which is almost certainly malware, is not available for download and you have to "contact" them in some way.
Oh yeah, this sounds TOTALLY legit ...
Let's try a different approach!
1. The description on Amazon says that it only requires OS X 10.5 or higher. So, question one: are you using OS X 10.5 or higher?
2. Have you read the included manual?
3. Have you run the included setup CD/DVD?