http://bugs.winehq.org/show_bug.cgi?id=26865
--- Comment #5 from Ken Sharp kennybobs@o2.co.uk 2011-06-06 17:55:03 CDT --- WinRAR --> 7-zip works fine (7-zip asks if you want to add the files to the archive, and then does).
7-zip --> WinRAR doesn't do anything, just gives the "NO" icon again. I don't know if it is supposed to do anything under Windows but I'll check later.