Outtram that is one way (the non destructive way)
the other is to remove the ir/AA filter from the front of the sensor and replacing it with an ir pass filter.
The light meter will work and focus can be adjusted to work. another forum member here makes the
mods DaveB (well that is who I got to do it) although if you can source the glass filter you can do it yourself quite easily.
http://www.astrosurf.com/buil/d70/ircut.htm
I did but the lee filter i used was poly so the result was not great. I then got daveb to change the filter to a glass one that he sourced.
That is about it.