VirtualMachine Tutorials ???

any one know any vm tutorials, i know its a far cry but hey, they have terrain renderer tutorials right ? im writing a simple stack based VM, i have made a VM but i dont know if im doing it right :/ it does the fibonacci of 20 in about 1-2 secconds is that a good score ? the fibonacci code has been hand coded (no compiler) and optimized as much as possible.. any help btw. the scripting system tutorial here on GD dosnt compile on Visual C++ 6.0 so i cant fiddle and that makes it hard to understand... im using C++.. Thanx - danushka|-sivlermace