The connection is seen as MultiAV RGB, and thus limited to SD resolutions.
You can play around with it in the xregistry.sys though
|/setting/display/0/type || ? ||4 = HDMI and Component, 5 = RGB (SCART and VGA), 6 = YPbPr (SCART connector)|
So, other than reposting a bunch of random, unrelated stuff from other people, what do you have to contribute?