Thanks for the help...
It's not a DOS program, it is running with ntvdm.exe and wow32.dll under Win 7
But I did it in meanwhile with good old W32dasm !
Just nopping out the counting down line and 10 minutes left forever...
Just an edit:
W32dasm counts 42 segments but only shows 27 segments
It's too long being in past, don't know too much about this kind of programs, it was my later youth!
But knowing something, we called in the past "deadlisting", made me able to kill this line in program.