Controlling switches with a PIC

[TonyA]

I was wondering if anyone could point me in the right direction about how to control switches with the pic18f452

I would like to replace a momentary push button switch whose contact is normally open (off), and "on" when grounded (pressed). It's a single pole, single throw switch.

So I would like to replace this switch and control it with the PIC.

Thanks for any advice.

T