Bachey :
RCguitarist :
Put the games in the same folder path that they were before, then tell steam to verify the installs. That should work. So if a game was in C:/Program files/steam/Max Payne 3 before, you need to put the game folder in that exact same spot again. You can verify a games install within steam by right clicking the games name in steam's library listing, clicking properties and then clicking the verify button.
I can't seem to do this as it's not installed.
Do you have a single storage drive that everything was on and just a single partition on that drive? If so, and you did a fresh install, then yes, you will have to download everything again. That's why it is best to have a partition for windows, and then a partition for everything else. That way if you upgrade windows or have to reinstall it for some reason, everything else remains.