If you're just going with a .pdf version then, I'd go with CutePDF Writer -- it's free.

It's a Windows ap. The way it works is you just write up the book in whatever program you want, and click print - but instead of printing it to paper, choose the CutePDF writer as the "printer". It just opens up a window where you want to save the pdf file, name it, and bingo you've got a pdf version of whatever you just made.

It's magic, I tell you. Magic.

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