VB and Dos Program

Hello All:


I am working on this project which get the information from serial port using DOS program.


Problem is when I run my program(vb program) and Click on Sen(to send data to dos program which is running, it says (Frozen in window down in my toolbar), but if i bring the Dos window in full screen it sends the data bak to my vb program and works great.


But I don't want to alway do it, is there any solution to that problem ?


ThanK you for help


Farhan Shah