The file is in pdf format and i'm just reading it with Reader (or Adobe Reader on my Windows machine).
Yeah, I've converted it to a jpeg, but, then you tend to lose a lot of detail as you zoom in and it makes the labels rather hard to read. I think I'm going to import the image into Gimp, redraw a lot of it, relabel it at a readable scale, and just make slice maps for the players. It's not like they really need the entire world map very often. Regional maps work well enough. And, the nice thing is the scale of the map is small enough that you can make slice maps that cover large areas with fairly reasonable file sizes. A, say, 2000 pixel square map will cover quite a bit at pretty decent resolution on a world map that is only a few thousand miles across. It's not like Thule is Forgotten Realms sized or anything like that. It's, at a guess, about the size of the continental United States, probably a fair bit smaller.