Simulating a Button Push

Hello im currently working on cracking Typer Shark Deluxe 1.02.
The serial method is way long and so I've decided to brute-force it.

Here's what I've acomplished so far:
Make it accept all serials.
Remove the Length Check so you don't have to enter a serial.

Now what I need to know is if you can simulate a button push.
I know where the call starts, and everything, but if I jump to it say, right before the "Register" text shows up, or any other place i've tried, I get a read access error.

Is this possible?