Using Bluetooth on imac 17" C2D

Hi

I'm looking at adding bluetooth functionality to my imac by using a USB dongle.

On Apple's site it says the following about using the bluetooth keyboard:

"Requires a Bluetooth enabled Macintosh (either built-in or using the qualified D-Link DBT-120 USB Bluetooth Adapter (Hardware version B2 or later. Older D-Link DWB-120M adapters are not supported). Mac OS X, v10.2.6 or higher required. "

IS this the only bluetooth adapter that works? can anyone recommend another adapter I could use with the apple bluetooth keyboard / mouse?

Thanks
Adam

If you have a new Intel iMac then you have Bluetooth built in.

It is the new one but the 17" one doesn't have built in bluetooth. Can anyone else help please?

Cheers