We've been over this a few times already.

- Wine runs under qemu-x86 on the N900. It's "usable". There's a video in youtube even afaik.
- Ideally you'd "patch" a native ARM Wine to only run the actual x86 binary code under qemu. This was done previously but nobody seems to care now with the demise of the PowerPC Mac. It's not trivial, either.

Wine itself might run on ARM as of now actually, but of course it would only run "Win32 ARM binaries" which do not exist (do not confuse with WinCE binaries).