EDIT:
At this point Nquest and Qcomment haven't been updated for about 4 weeks, if you are looking for a alternative try downloading these 2 addons. Lightheaded adds the wowhead comments and TomTom allows you to use the cords to setup waypoints.
WoWInterface Downloads : LightHeaded
WoWInterface Downloads : TomTom
NQuestLog (Ace2) improved quest log.
qComment (nQuest is required) This adds comments from wowhead to nquest, and if you use Cartographer with it where you need to go for quests is marked on your map and minimap.
Cartographer (ace2) Map addon that shows the full map without having to explore everything, pops up in a window so you can still see what is going in game. It works with nQuest to show marks on the map and mini map where quests are located.