How send character to keyboardbuffer?

Hi,

I'm trying to write a small .com which should send 1 keystroke to the
keyboardbuffer or something like that.

In fact, I'm just trying to assign the backspace to 1 mouse-button
using MS intellimouse 5 or MS intellimouse 6.
This program can add most keystrokes except the backspace :(
But the intellimouse-utility can start an application which in my case
it should just run a small .com file which should pass a backspace to
the active window. So far I didn't find the correct INT and AH,....

Anyone knows how?

PS: I use XP/sp2 using a batchfile to write the .com file ;-)

Thanks,
Michel

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