I use atlasloot and cartographer and I want to know how I can make the map show where I haven't explored so I can get the achievements for exploring

anyone?

With Cartographer2, get Cartographer_foglight, I think it is called. You may have to so some google searches because a couple of days ago it disapeared from curse, even though it still works.

* EDIT: you may not need to try to find foglight, as the Cartographer main page says it has it built in now. In that case, bring up your world map "m" and you should see a button on the top that is says Cartographer. This is the config window, and on the list at the left, there should be a foglight setting. Adjust the colour for the unexplored areas to something other than the default and there you go!