HyperHorse: I installed that font file and it has done NOTHING!!!!!
Those posts are from 2011. The game has been updated a lot since then, so the old font size fix no longer works.
There is a newer mod that will increase the font size called the Comfy Couch mod. I haven't tried it myself, but you might take a look. It used to be hosted at Nexus Mods but it seems that site is down at the moment. Anyone know where to access Witcher 2 mods right now?