I was just wondering... I have a nice Kingstone Data Traveler 2Gb pendrive... Can I install the game on it and make my Doomsday portable... will there be any registry problems... will simple file copying be enough? I am going to use this pendrive trick to play on my dad's company notebook... I want the game to leave no marks in the system, so his company administrator will not know that such a game was launched. pls advice how to do it...