Input remapper has been working like a charm on my white MB. I updated the drivers for bootcamp 1.3, and now i can see volume and brightness controls on screen. The bad thing is, when i press fn+Eject for screen capture it ejects the disc on the drive and the eject icon appears on the screen and also on the captured image. The only work around i´ve found is to kill the kbdmgr.exe process, capture the screen with fn+Eject (it stills eject the disc on the drive..) and then i get an image with no eject icon. Then i just run kbdmgr.exe again and it's all good.
Perhaps, remapping fn+f7 for screen capture would be better, since it has the rectangle icons that could be interpreted as a screen capture....
p.s. I wish there was a Remote Remapper that works under Windows XP to handle the Apple Remote and get it working under powerpoint