Yes, dosbox supports that trick. But I think that Henri was referring about having it in the same args C variable. It's separated in the last patch. Should I resend it again? I'm a bit confused about how wine deals with patch resend.
Yes according to the dosbox man [1]: -userconf Load the configuration file located in ~/.dosbox. Can be combined with the -conf option. http://linux.die.net/man/1/dosbox