Well Sveg to Hede is looking good. I managed to find a plug in for Google Earth which overlays the Enviro high resolution Swedish aerial imagery on top of the low resolution default Google aerial view. Easy to pick out the course of the abandoned line, with some guesswork in one or two places.
There's also a good source of information here...
http://www.historiskt.nu/normalsp/st...hede_main.html
including station plans and an outline gradient profile (I never did find one of those for the Inlandsbanan).
So it looks like we're off to Hede...