I found a review by AVGuide.com that went into some detail on this TV. The review indicates that the DVI input is HDCP-compliant, so I don't know why the Samsung didn't work - one possibility would be a default output setting of 480i (a resolution that DVI doesn't support). The review also indicated that the internal scaler is a pretty good one, at least on the upper end of what was offered in HDTV's at the time the review was written (late 2002, early 2003).