http://bugs.winehq.org/show_bug.cgi?id=11657
--- Comment #14 from LIGHTNING UK! lightning_uk@imgburn.com 2009-03-16 05:17:01 --- Changing it in dlls/user32/resources/user32_En.rc would then make it apply to all the MessageBox calls though wouldn't it?
It just needs to lose the 'C' accelerator on the 'Cancel' button when 'MB_CANCELTRYCONTINUE' is used.