They have long been working on being able to convert CK2 savesgames to EUIII (And then on to another game) for a mega campaign, but it's a fanmade one and I don't think it's complete. If you nose around the forums though you should be able to find how far it's progressed though, I haven't really kept track on it.
I played EU3 in the past, and really enjoyed it, but I don't have the game any more. I remember getting beaten badly by it too (Mostly in the tech) except for one game in Spain where I went on to colonize a lot of the New Land. If you can't find anyone else, I'll certainly be interested in it to get back into it again, because it's a good game, but I never really picked it up again afterwards. Nonetheless, if you like CK2, I can recommend EU3 as well.
Now that this topic is up anyway, I still have a free copy of Portal 1 on Steam as well, if anyone is interested. I got it with Portal 2 but none of my friends wanted it (Most of them already had it).
