Belkin F8T009UK Bluetooth USB Adapter
Adds Bluetooth v1.2 to your PC
Improved voice application function
Plug-and-Play convenience
Backwards compatible with Bluetooth v1.1
10m Operating range
PC and MAC compatible
Works really well. Bought one a few weeks ago. Does it perfectly and quickly.
Its £14.99 from PC World. (Search for USB BLUETOOTH)
Hope that helps