Mandeville Home Alarm Install/Reprogram Advice

I just moved to Mandeville and the house I moved to has a gemini wired alarm system. I do not have the code (previous owners didn't have it either). Any idea of who I could call around the Northshore area to come try to get it reprogrammed. I don't want to have it monitored (just local), so I doubt someone like ADT would do it (or they'd charge me a lot of $$$). All the doors/windows are all wired with sensors already. I'd hate to buy a separate DIY wireless system whenever everything is already wired. I'd be willing to buy a new keypad if necessary.
Any idea of who would do this kind of thing and what it'd cost? I tried GOOGLE, but all I can find is big name companies (ADT,etc).

TIA!