well i am disappointed that you cant admit when you are wrong and apologize yourself for not keeping and open mind and learning. but its ok.
second you are still being wrong about the memory. 800 meg of memory is not it any way shape or form needed for windows or reserved for windows. you can run windows fully functional with 128 meg or ram and still run programs so that makes no sense dude.
Third VAS and nothing to do really with memory and its limits you need to read up on that.
its how the memory is allocated and says specifically nothing to do with physical memory. since the best way VAS operates is to write to the page file but has nothing to do with the size of it. so like i said VAS has nothing to do with this convo.
the total memory your system has is called the "commit charge" like i pointed out in tasked manager, that is the total physical and virtual memory and they are 2 completely different things. the total commit charge your system can have is 8192, 4096megs of each physical and virtual.