Let's say you had success with other HDMI displays. I read up on this DLP and found it's one of those HD ready devices so it's likely that some HDCP failed.
Check with Samsung for any firmware or such updates and hope.
"3 composite, 3 S-Video, 2 component, 1 DVI, 1 HDMI, and 2 RF inputs"
Try that other VGA to DVI adapter cable.
I've tried every conventional way of getting it to recognize it.
Booting with it plugged into both, just the computer, Alt F4, Windows + P... Nothing.
And I can't even select HDMI on the TV... It is greyed out.