http://bugs.winehq.org/show_bug.cgi?id=23217
--- Comment #5 from Dan Kegel dank@kegel.com 2010-10-15 18:17:51 CDT --- _strlwr_s implemented, http://www.winehq.org/pipermail/wine-cvs/2010-October/071346.html
don't have time to retest today, but maybe it's fixed