Nah, you need to download the Steam program on the PC you want to play it onThen inside the Steam program you can browse the games store (similar to iTunes I suppose), and it'll then download your game for you. As soon as it's done you launch the game from within Steam, and Steam is used for choosing multiplayer servers etc.
(
zoldergoose,
Fri 1 May 2009, 1:56,
archived)