How 2 write to an existing DOS-Box?

[TSM]

Is there a way to write text messages to the DOS-Box that I use to start a VB program?

I want to use the above mentioned VB program like a DOS-Command-Program without a GUI but with textual feedback or messages.

Also I want to use return codes to handle them in .CMD-Files with IF ERRORLEVEL == ... control statements.


Thanks.

Thomas