Ive had problems with it , I tried the Software on 3 different machines each with a different version of Windows , result the same . My own PC runs Windows 7 Home premium 64 bit , It just crashed the system , I tried the software on XP and Vista and Windows 2000, XP wouldn't entertain it nothing runs on vista . So Im gonna look for Trains 2010+ , as long as it works with Windows 7 64 bit . I am about to update the Graphics card from 512mb (Nvidia G-force GTS 8400) , thinking that could be the problem but everything else works ok . I no longer have the software , I do know 2008/09 works with Windows 7 32 bit & 64 bit once again I don't have the software . Any advice on what to do next ????