I re-did my system a bit back, upgrading to a retail copy of Windows 7, and bringing over all my games was really easy. Just re-installed Steam and then copied over my old Steam apps folder, so I didn't even need to re-install or download. But I lost saves on a few games, not too big of a deal, though.
Kindle Reading List (163,457 Locations Completed)
Finished: Aquariums of Pyongyang (2535), Under the Loving Care of the Fatherly Leader (24,074), The Lone Samurai (4753), Nothing to Envy (5349), Shogun (26,263), Eating with the Enemy (9170), Fight Club (3218), River Town (7524), Don Quixote (21,430), The Party(6492), Bravo Two Zero (7340), Rogue Warrior (7602), Mao's Great Famine (11,059), His Dark Materials Omnibus (20,766), Moon Lander (5882)
King Rat (9308)