the thing you're all scrabbling for is called "GlovePie" and it uses the Bluesolei (sic) driver so you can use your wiimote and nunchuck on your pc. It comes with alsorts of scripts for loads of different apps/games and its easy to write your own.
I tried it with google earth and it worked quite well, sadly i use megamall to transfer Mii's about the place and that doesn't work with the Bluesolei drivers only Widcom ones. So unless someone has a cunning way to have 2 seperate drivers for bluetooth on an XP pc at the same time you to re-install the bluetooth drivers depending on which app you wanna use.
I tried it with google earth and it worked quite well, sadly i use megamall to transfer Mii's about the place and that doesn't work with the Bluesolei drivers only Widcom ones. So unless someone has a cunning way to have 2 seperate drivers for bluetooth on an XP pc at the same time you to re-install the bluetooth drivers depending on which app you wanna use.