Sorry if this has already been mentioned, but I was about to change my 1280x1024 "widescreen" in my xbox 360 settings to something else to see if I could get it to look clearer on my dell 20" (2007WFP) monitor. I have just noticed that I now have the option to set it to the monitors native resolution (1680x1050) and there are also LOTS more resolutions for other sided monitors 
Only slight problem is...even though its set to 1680x1050 I get a black bar above and below the picture, about 12mm in height on each. What gives?

Only slight problem is...even though its set to 1680x1050 I get a black bar above and below the picture, about 12mm in height on each. What gives?
