Speed mapping
First, I'm responding to my own initial query because: a.) like information should be in the same place; and b.) I hunted all around for this information and now that I have it, I want it to be easy for others.
Speed Mapping:
No ifs ands or buts: you NEED photoshop for this. Go into the "Channels" palette and simply make a new channel (default should be "alpha 1") I made three channels; one for black, one for gray, and one for white - each shade representing a speed one can travel on the map, white being fastest and black being not movable at all (good for lakes, unclimbable mountains, Requiem, etc.)
.png files:
The file needs to be saved as a png file. Anyone who has used Fireworks should be familiar with this format and know what all it can do. For those that don't, it's simple: certain information can piggyback in the graphics file without the crazy additional stuff a regular ol' psd file would include, ie - you can have alpha channels in a png file.
Make your own map:
I highly suggest this. Going into the BOS.cam file with Redviewer and checking "preview" (in the upper righthand of the program gui) and then exporting as a png should give you the original map to work off of. While you COULD use the original map, takei n mind it exports the grid lines WITH the png. What that means is you've got to line them back up when you later import your png back into the bos.cam file (through the actual FOT editor). Refer to Requiem's response above for sizing (he says 75). The FOT actual dimensions are 67.7 inches by 35.412 inches at 72.009 dpi. Leave this be.
If you thought map modelling took numerous revisions, world map revising takes just as long, if not moreso. I have my map files as multi-layered psd files I later collapse and output as png (WITH the alpha channel box checked when exporting; photoshop requires you into the "save a copy" option for some reason).
That's all I got for now. Hopefully this helps more modders make their own maps instead of using the FOT one we all know. More later.