Yeah, 43F is Mac-centric, and Merlin *is* a bit mad, but he has some good stuff. There are some outlining apps for the PC, and you could easily whip up a task/"next action" list with that, without the actual KGTD scripts that wouldn't do you any good. I like the KGTD scripts as, well, that means I don't have to write them myself, and it also synchs with iCal (my calendaring application) and therefore my iPod, so I can see all the crap I need to do "on the road".

Of course, you could buy an iBook ;-)