If you mean excluding out of current zone quests, 5+ group quests and the like, all you have to do is click the 2nd arrow in the Quest Watch window and change the options there. If you mean the sliders, you may want to take a look here
http://www.wowinterface.com/forums/s...ad.php?t=21815 I'm not sure if those are default, but they would at least give you a starting point.