These gyus ( http://linux.insigma.com.cn/en/index.php ) are working on support for running Windows binaries in Linux kernel.
It works by supporting Win syscalls directly in kernel or ( for unsupported ones ) by redirecting them to patched Wine server. Authors say that end effect is much less speed loss. Their previous versions were too limited and since they were written as a patch against vanilla-2.6.23, I had no luck trying them on anything newer. But latest version 0.24 is reportedly much closer to real deal. I could apply majority of the patches to gentoo-sources-2.6.29-r4 and I'm curious whether anyone here tried to fiddle with LUK and could post here final gentoo-ready version. Unfortunately, this version still doesn't support ext4, but this should come soon...
