How do import saves from the witcher 2?

When you start a new game in TW3 you should see the option right away after selecting the difficulty to import a TW2 save game. After you click that just select the one you want to use.

ps. they should be in C (local disk) -> Users -> user name -> my documents -> Witcher 2 -> gamesaves If you don't have that folder there it might not see it right away (just speculation if never moved around any of my tw1/2 folders).