An alternative to the wiimote IR sensor itself.
Solves your problems with connection of blue-tooth, no software needed on the computer!!!
The device is connected by USB.

[youtube]http://www.youtube.com/watch?v=9EbvAerRlag&feature=iv&annotation_id=annotation_381500[/youtube]
It uses the same technology as the wiimote, but everything is integrated in the Vmarker itself.
Transformation of IR-sensor coordinates to mouse coordinates is integrated too. So, the computer, recognizes the Vmarker is a HID device, a mouse and don't need software to be installed.
The price will be way below € 100.
Visit
http://www.vmarker.org.