Well, here’s the new story. I got an IOGear BT stick and plugged it in. It works better than the Kensington or the built-in BT from the MBP.
But still not good enough. It picks up smooth and steady when I aim the pen right back at the wiimote, but when I use it as a pen to draw on the board/monitor, it picks up nothing, or very very little. It’s very jittery (if visible at all!) when I aim it at the screen. In fact, I ran a test with it and only got it to pick up a reliable signal from the IR pen when I had the wiimote less than 4 feet from the screen.
Then I BootCamped into Windows XP and tried it there. I used the IOGear stick and Johnny Lee’s software and everything was wonderful. Then I tried it with your software and it was horrible. Just like before. I tried it (in Windows) from only 6 feet away and it would not pick up any IR dots. When I used Johnny’s program it was fine.
What could be causing this? What else could I try?