I downloaded qemu and tried to get it to emulate suse linux in windows, I even downloaded the special version of suse for qemu (1 Gb). It turns out the version I got must have been bad because I tried every possible combo of commands from the prompt with qemu.exe ...... but all it would do is:
C:\qemu\> qemu.exe
C:\qemu\>
so it wouldn't even give me an error message for running the executable. It turns out that the version was bad. So I downloaded a good version and copied the suse image into the folder. I then thought to myself, wow that image copied fast. I looked and the image had a file size of 0KB!!!!!!! Somehow qemu had screwed up my image so that it was no longer usable. My original downloaded file was gone too because for some reason windows downloaded it to the temp folder. Anyway, I tried it but it seemed way to complicated for me, maybe it would be better if I could find some good documentation on it. As far as how fast it could emulate windows in linux, I guess its supposed to be very fast.