You might find something useful here:

http://www.freedos.org/


>I use a commercial remote backup application to allow my clients to backup their data to my machine overnight. I have to use the DOS version of this program because some of the clients are still using DOS versions of their software.
>
>I cannot upgrade to the Windows version of the Host because it is not compatible with the DOS version of the Client.
>
>>Dan,
>>
>> Why do you need to access the serial port through a Wine session ?
>> I mean there's a couple of Communication program that you can
>> install when installing your Linux flavor... no need for
>> that long way.
>>
>> Maybe with more detail in your question will help us...
>>
>>R.