CRT monitors will work at various resolutions, however LCD monitors tend to have a preset resolution for their size, (15” 800x600, 17” 1024x768, 19” 1280x1024) and require help from the computer to display other resolutions, so my guess is that the Midjay outputs at 1024x768, which is why it works with a 17” LCD.
A good test is to connect the CRT monitor and see what resolution this defaults to when you connect it to the Midjay. (At a guess I would say it would be 1024x768, although I could be wrong)
Hope this helps to clear up the confusion a bit.
Bill
_________________________
English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).