Well it says it has "HD Input, DVD Input, DVD Progressive Input"
I'm pretty sure that's going to mean it has a component input on it, which would probably be your best bet. The resolution specs on it are rather odd though, so I don't know if component would be able to send it a better 4:3 resolution than 480i and have it look any better. S-video can send 480i so if that's easy enough to hook up, try that first and see how that looks. If you're not concerned with reading text on it, that connection will probably be decent enough for video / games.
"DRC100 reproduces 625x1440 pixels with double scanning on real-time basis to yield stable pictures with no flicker. And unlike conventional 100Hz TVs which copy the previous fields instead of scanning in real time, there is also no jerky or shadow effect with DRC100. DRC100 also has 2x picture density to deliver crisp images and fluid motion that make viewing easy and gentle on the eyes."
"Sony's unique signal processing algorithm improves picture density by doubling both the horizontal and vertical pixels in real-time. With the double-interlaced scanning lines and horizontal pixels, picture density improves tremendously. DRC1250 is optimal for viewing general broadcast programmes and prerecorded movies on digital media. Perfect technology that reaps multiple benefits for those who demand clarity of image and sharp detail. The benefits of DRC1250 is more obvious with digital broadcasting where picture quality depends on the quality of the TV receiving the signals"
What kind of videocard do you have?