Download LaunchKey.zip, and unzip the files to a folder in your path.
The syntax for using LaunchKey is:
Launchkey "KEYS TO SEND" "APPLICATION TO RUN" \["APPLICATION PARAMETERS"\]
Launchkey "Here is some text." Notepad
"You can send all the normal key character keys as well as special keys like ALT, CTRL, F1-F12 etc. Details on how to send key presses is contained in the accompanying Helpfile."