Acoustic solutions, suround amp remote

i have an oldish acoustic solutions suround sound 5.1, on the front main sub woofer box it has down 1 side which mode you are in lit up by a small light. there are no buttons to change mode,i did have a small credit card sized remote wich i have lost,i have tryed just about every allinone remote but none will work it,iv even tryed 2 get the remote code,PLEASE PLEASE help me,, what can i do,do you no the code,where can i get a remote that works