thanks, I just received this email from the adt stating:
The output from the video adapter on the Developer Transition System is a
digital signal only. The connector is DVI-D and therefore does not support
analog signals which is required by VGA monitors. There is no adapter
available to convert the DVI-D connector to a VGA connector. Apple’s 20″ and
23″ DVI based flat panels are supported as well as many other 3rd party
digital flat panels with a DVI-D connector. 
With the Apple DVI-ADC adapter, you may attach a 23″, 22″, 20″ ADC based
Apple display to the Transit
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