Does anyone know if it is possible to hook up a digital cable box with DVI-D out directly to the pj that has only the VGA port? Is there an adapter available and would it work?

Standard DVI-D:
http://www.networktechinc.com/dvi-vga.html
http://www.ramelectronics.net/html/DVI_ADC-converter.html

HDCP DVI-D:
http://www.digitalconnection.com/Products/Video/DCDA1.ASP

I cannot vouch for any of these products, but the HDCP DVI-D looks nice!

Those are expensive... I was hoping to be able to hook the digital cable box directly with just an adapter type thing - so I wouldn't have to spend the $ on an N6 type thing. The cable box has DVI-D out and you have the ability to set the resolution output as well as aspect ratio. Sounded too good to be true I guess, unless anyone knows otherwise.