http://bugs.winehq.org/show_bug.cgi?id=1191
------- Additional Comments From us@edmeades.me.uk 2007-01-04 14:31 ------- I would suggest the title of this bug be corrected - I dont think the issue is to use cmd.exe from Reactos, it would appear there are some old 16 bit dos command line applications which do not work. This is more related to the DOS support or the wine-console support than the ability to physically launch them. (You dont even need cmd.exe to get this working, eg in this case wineconsole --backend=user dn.com)
Note anything which takes control of the screen will need running in wineconsole mode (I'd try both --backend modes, as I'm not sure which is best nowdays)