The easiest way if you are running batches or .cmds would be to put a pause statement at the end of the script. It will sit there and wait for a keypress.
Since you are calling from an ASP script this may or may not work, but if you can invoke the command interperter with the /k switch it will stay open once it has finished its business. ie
Code:
%SYSTEMROOT%\cmd.exe /k mybatch.bat
If all you need is the output you could also try redirecting from STDOUT to a file ie