Grab a compiler (if you don't have already) for any generic programming language that can interface well to the Windows API (VB, C, C++, Pascal/Delphi, C# etc.)
Look into basic functions such as SendKeys, or keybd_event for simulating key presses. You'll wanna stick your pot type into a hotkey of choice, and have your application simulate that hotkey press. Note that those 2 functions are quite elementary, but when you get better, you might be able to use messaging to simulate keypresses without the CO window being in the foreground.
For starters, make an application to auto pot at regular intervals, when that's working, come and ask how to monitor HP for a more accurate potter.
Anyway, if you're not interested in making one yourself, you're in the wrong section. >_>
