1> DVI-D is DVI digital, not dual. It means that the dvi-vga convertor will not work.
2> HDCP stands for High-Bandwidth Digital Content Protection. It means that if your content is protected under DRM and other crap, then it'll work only on HDCP enabled sytems. This is not a good thing, but luckily we don't have to worry about this yet as its implemented only in Blue Ray and HD-DVD. By the time BR and HD_DVD are affordable in India, HDCP will be cracked.