Hi Sinsi,
>>It's a shame that Microsoft is not willing to extend the NTVDM environment to support Win64.
>Once you are in 64-bit mode you no longer have access to V86 mode. Blame Intel/AMD, not MS.
True... but if Microsoft wanted to, they could extend the NTVDM to run fully in software emulation mode under 64-bit Windows. They already allow some 16-bit protected mode applications to run this way, such as legacy InstallShield and Acme installer files (16-bit installers used to install 32-bit applications). The performance of DOS applications would not be as fast as in Virtual 8086 mode, but as modern CPU's become faster the difference becomes marginal.
Regards, Mike