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You only have to do that for Ubisoft games.
Just copy and paste it, goodness there's no reason to buy the game again just because of having a new computer.
If we weren't going for your money, you wouldn't have gotten as much value for it!Oh, wait... *causation loop detonates*
Yes, unless you cut and paste the whole folder, in which case you don't even need that. It's very portable, there's nothing in the registry -- all your data is in settings.dat.