I wrote my progs many years ago using HiSoft basic compiled. They have run every day for 12 hours or so for twenty years, doing repetitive probability calculations. The machine has burnt its A3640 card but the cpu is ok according to Leaman computing. I am worried that an emulator on a laptop would overheat if run all the time and would not be as quick as the new X5000. As this is important the cost of the new machine is secondary. I can sell the bits off the 4000 040 to help the cost. Thanks again