Audio Systems: radio cassette, toyota corrola, factory radios

Question
hi i have a coded  1999 toyota corrola   FUJITSU TEN AM/FM  radio cassette (not cd)i have the code but dont know which buttons to use to enter it can you assit,
many thanks
gary

Answer
lets say code is 5241
presset 1 press 5 times
presset 2 press 2 times
preset  3 press 4 times
presset 4 press 1 times
this is the way it works for toyota 1992 to 1998 from 1998 and up there is no code for the factory radios  at least not in the us