Setup, i5 with the 4850 @512mb. 8gb Ram. I am running Parallels 6.0 dedicating three cores and four gb of ram to an XP/SP3 instance. Notes. - occasionally a group of tiles will go black, have to exit game to menu, change resolution back and forth to clear. Sometimes it clears on its own. - 1900x1200 runs fine with everything on. Realize I am in a Window though the game thinks it is in full screen. - You can play without an internet connection, but you are required to have it to install. No steam spam! - You can play without the DVD in the drive, even without an Internet connection. - to disable the intro movie find the user config file and set it to 0 for the movie I am probably going to upgrade to 7 soon. I am blue screening occasionally, IRQL_NOT_LESS_EQUAL errors. I had these in bootcamp with LOTRO and Parallels gets them less frequently than Bootcamp. LOTRO would not even run in Bootcamp after the first time.