The Unofficial Pronto/RC5000 FAQ.
[Link: remotecentral.com]

Also see Help in ProntoEdit.
In Help read Configuring a CCF/ Programing/ Actions/ Assigning an IR Code and also see Hard Key Actions in Configuring a CCF/ Programing.

Also read about Macros in Configuring a CCF/ Programing.

Cheers
Jason

PS.
It is also a good idea to look for Discrete Hex Codes for your Devices.
If you need help with that, Post the Make/Model of your Devices and I will help you out!