Faster: The most recent patch (1.004) of the S.T.A.L.K.E.R. – Schadow of Chernobyl video game is remarkable because it accelerates notably the performance of this game on your PC without changing its hardware configuration.
Less easily: It was forecasted to have S.T.A.L.K.E.R. – Schadow of Chernobyl in download on Steam, the game distribution system from Valve. This has been delayed a little to ensure a simultaneous launch all over the world. But Valve had to ban S.T.A.L.K.E.R. – Schadow of Chernobyl from its offices until Half-Life: Episode Two and the Orange Box are not finished and ready for shipping to the public (so, you really have to work when your job is at a video game developer).
Finally, the players that accepted the difficult start of this game may be happy to find the Bioshock Tweak Guide from Koroush Ghazi.