Rhino for Windows on the Intel Mac [McNeel Wiki]
I'm the unlucky user from above. I can precise that Rhino 4 works well but only with Parallels 2.0, and for Parallels 3.0 you can run Rhino 3 !? My system is WinXP on Mac OS X - MACBOOK Pro Core 2Duo 2.16 GHz Rhino 4 is still not stable on Parallels 3.0, ...