Thanks for the info, Brian. Unfortunately, I sold my D70 and D200 in order to afford D300 and D700. I'm reluctant to repurchase a similar camera to those earlier ones just to try out infrared. I was not aware of the viewfinder problem. However, as I will only be dabbling, that might not be a huge irritant for me (tho I am quite lazy at times). Thanks again for your input.
John