My printer is not listed as a choice in Program Setup.

The best thing to do is to look in your printer manual to see if it includes printer strings. If so, you can use those strings to make a custom printer in MYM. If not, then you can call the printer manufacturer and tell them your situation. They should help you pick a printer from the available list in MYM which has similar printer strings. Once you pick one that's close,
they can help you enter the custom printer strings to get it working perfectly in MYM. Sorry for not having the strings for you so you'll have to call the manufacturer.