How can I get my 2001 Daewoo's alarm to work with the key remote?

I lost the main remote for my 2001 Daewoo's car alarm. I tried locking the doors with the key then unlock it with the key remote but it did not work. Now my alarm was set off and I can't shut it off with the key remote. I disconnected both battery cables and let it sit overnight but when I hooked the battery back up the alarm was still on and the car won't start. Any suggestions or answers?