assuming you have the radio code. try disconecting the battery for half an hour and then putting it back on and try the remote fob.
mine went off for an hour or so once ages ago and then just came back. another time it stopped flashing the lights I think, but then that came back too. although I am not sure that wasn't another car I'm thinking of... sorry, rambling now... try the battery thing, fella and let us know.
:zee: