Taking screenies of your world map?

This could be really easy, but then on the other hand it might not be possible. I've seen a few people posting screenshots of their ENTIRE world maps in zoomed in style. So basically they are big image files. I wanna know if those people taking the screenies are pushing some command on GW to take these screenies easily. Or are they taking pictures of every single part of their world map and connecting them with paint? thanks.

Connecting a bunch of different screenshots with ctrl+H up so that it hides the outpost stuff

I'm not exactly sure what you want, but I'm assuming you want the zoomed in world map as one big picture. Anyway, each bit has to be screenshotted individually, then stitched together using one of various picture editing programs.