1) Yes. This site. Go to the files section and find either the URC file that corresponds to your device, or a Pronto CCF file which can have learned commands imported into your MX software (if you are using a PC-programmable URC remote).

You can also enter the code in the same format that a CCF uses, along as it starts with 0000.

2) Variables will do what you want, but will only work if the device gets the signal each and every time and/or if no one turns the device on or off manually.

To give you a complete lesson on variables is out of my scope on this site.

If you are a URC remote control dealer, you can register on their site and get information on how to program variables.

Also, you can attend one of their classes that may be near you, or ones at CEDIA and CES, or their online courses (you need to be a URC dealer).