Using a parallel port to control a remote control...

Hi!

I am wondering if this will work, and dont want to destroy anything
trying,,,

i know theres products out there that do this, but I want to make my
own...

Through software I can control turning on individual pins out my
parallel port.. The switch on my remote basically just closes the
circuit for that particular button.. I want to know if the voltage
going through the remotes button when closed (5v) matches the voltage
comming out of my parallel port (which it does), is there a way I can
wire in my parallel port to activate the button through software?

So one end of the switch has 5v, and the other has nothing until the
switch is pressed.. Can I just wire in the data line of my parallel
port to the end of the switch that is doing nothing. Then when I turn
on that data line +5 will go and the remote will think the button was
pressed and act accordingly?>

Do I need to tie the ground out the parallel port to the ground on the
controller?

thanks for your help

.

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