As VB 6 is no longer available and supported and as there is *no* publicly available specification or documentation of the compiler's internal workings, implementing this would be rather hard, not to say impossible. Of course, if there is somebody out there feeling up to that task, I'd be pleasantly surprised if s/he succeeds.
Mono as already mentioned is re-implementation of the .net framework. I doubt that it uses less resources. VB.mono is a re-implementation of VB.net.
Now about the compiler for vb6 this is where my point of requiring the
original vb6 be installed so that sharpdev would just shell out to it
for compiling. I believe the linker is just MS C++ linker, but i'm
unsure about other components of the compiling system.
Hmmm. Now that is somewhat contrary to your statements about the performance requirements for .net:
...is that the .net platform runs dog slow on a p3 600mhz or 1ghz.
In a nutshell - I hope I didn't get you wrong - you want an IDE relying on the (according to your judgement) performance hungry .net platform to run on a slow machine as a replacement for an EOL'ed Microsoft IDE/compiler that was written natively for that older (incindentally also EOL'ed) platform? And another problem - where to legally obtain that compiler?
If you really care about keeping classical VB alive, please consider signing this petition.
Don't get me wrong - in my young days I spent many a happy day toiling away at writing little VB programs to annoy friends. Boy, do I wish those times were still around... Alas, the times, they are a'changing....