QEMU Under Vista

Allright, I'm trying to run QEMU inder windows Vista, and it keeps crashing becasue of vista's FAIL.
So, here are my arguments
qemu.exe -L . -m 256 -boot d -cdrom osx.iso -hda tiger.img -soundhw all -localtime -M pc

Any idea why this doesn't work? It worked under XP, only with less RAM.

Why are you persisting with Vista if you already know it's made of fail?

I'm yet to find anyone who is benefitting from Vista more than XP, and anyone who 'prefers' Vista is just an eye-candy whore..