Hello, all. I'm posting here to see if you might be able to help me with a problem. I'm not computer-savvy; this is my second one. I have Vista Premium, I believe the 32-bit version. My problem is related to running some instructional courses I installed to the computer. Every time I attempt to run it, it locks up the computer. I get the message "NTVDM.exe has stopped running". I can't click the options to either shut it down or go online to look for a solution. I know someone else has a computer with XP Professional that runs these courses seemingly OK. There's also something called "Asymetrix Tool Box II" that installed along with the discs, if that matters. I have to shut it down by pressing the Start button since nothing responds. I've sent error reports to Microsoft, but no solutions were found. I've looked online for possible fixes, but either don't understand enough to know what I'm needing to do or not finding anything helpful. About all I found was some various posts stating Vista is incompatible with this "NTVDM" process, and some stating just Vista 64 is. Is there anything I might can do to get this fixed on my end, or should I go to a professional? I can't afford to get Microsoft involved for a price just to be told "Sorry, this is a third-party issue". Thanks for any help/advice-and if you need to know more particular stuff, please ask.