Bluetooth Keyboard Problems
Problem: An Apple Wireless Keyboard or another Bluetooth keyboard works in Mac OS X, but not in rEFIt, LILO, Windows, Linux, whatever.
Solution: As mentioned in the Boot Camp Requirements, Apple does not support the use of Bluetooth keyboards and mice with Boot Camp. They will actually work to some degree, but they will not work realiably. There is nothing rEFIt could do about this. If you have problems with your wireless keyboard, use a USB or built-in keyboard instead.