For cable (RCN in lower Manhattan), I use the following settings. Note, I prefer a cooler picture, though with less green. I also tried to find a good balance between HD and SD video, though bent toward HD video (also note, RCN only provides 720p).
If you want a different white balance, I suggest you focus on the White Balance control rather than Tint since the latter is a good bit less precise. I use the Flesh Tone tool because I believe it specifically targets flesh tones and decreases the green in them.
Finally, the picture varies so greatly from one channel to the next that I can only imagine it would do so even more from one cable service to the next. I'd suggest starting out with these settings or those above offered by lcdbuyingguide and then adjust freely to suit your tastes. As I did, be sure to check several channels and weigh those you watch more often more heavily. Good luck.
Eco: All Off
Black Tone: Darkest
Dynamic Contrast: Low
Color Space: Auto
White Balance: R-Off 27, G-Off 17, B-Off 16, R-Gain 23, G-Gain 20, B-Gain 25
10p White Balance: Off
Flesh Tone: 2
Edge Enhancement: Off
Picture Options: Color Tone - Normal, All Others - Auto/Off