I have a CD of games I've had for quite a long time. It is both DOS and Windows games. It used to play on my new computer for awhile on Vista but it does not now and I'm not sure why. It keeps telling me that I need at least 3 megabites of virtual memory for the DOS games to play. Do I need to get more RAM or something to get these games to play or is the disk just too old to play anymore?