I bought one of these: http://www.iogear.com/product/GBU421/

It's a micro Bluetooth adapter. So I plugged it in, up it comes, Magic Trackpad is discovered, and off I go.

I went to recycle the packaging and it felt heavy, so I looked inside. One mini CD and installation instructions. Hmm, what did I miss.

20 pages of Windows installation, and one little paragraph for Mac: "The Bluetooth drivers come with the OS. Just plug it in."

Ahhh, nostalgia. I remember those days. Not fondly, however.

I made the mistake of not buying the $50 (or whatever it was) Bluetooth upgrade when I bought it because I didn't have anything Bluetooth.