i downloaded the splinter cell double agent single player demo which worked ok so i bought the game and installed it,just as i thought it had installed it the disc stopped spinning and the installation screen never changed to the next step.the screen had freezed on me and i couldnt even cancel or close the window.the demo now dosnt work and neither the full game or demo do not show up in the add/remove programs menu so i cant uninstall them.i tried to uninstall the game through the game disc menu but it wants to install the game again.is there anyway i can find the files of the demo and the full game so i can remove them and try the install again?is there anything anyone can suggest so i can play the game?i did try to install the game again but the same thing happened,could someone please help me out,many thanks