Actually what you need is cartographer and lightheaded. Tomtom is just for adding coordinates to the map. Lightheaded is what adds the arrow when you click on quest coordinates in lightheaded "wowhead" quest info.

http://www.wowinterface.com/download...ghtHeaded.html

And since it took me awhile to figure out you can get rid of the arrow by right clicking on it and selecting remove (in 3d world view) since they get stuck at the end sometimes.

Ziran