Ah ok. Well, in that case, I would love to help you.
I don't know if there is a specific mod that let's you add your own coordinates, but you can download the maps at eq2interface.com and they have a ton of POI's already on their maps. It does get quite convoluted on the map at times, but it definitely helps out. In fact, there should be a link on the front page of Alla's in the top left corner that has the different kinds of mods.