how to sort my 1995 m reg renault laguna immoboliser out?

i have just bought a 250quid renault laguna, problem is after 2 days of using it i pulled up outside my house and then went to use it again and nothing. now the central locking works very dodgy tho u have to do it a million times to get it to work, then when you try to start it you have to press the key fob to lock and then to unlock it b4 it starts from inside the car, i know its a joke, anyway now it just wont start, i can turn the key but there is nothing, but ive just looked under the bonnet while having the ignition on and something is making a clicking noise so please could someone help?

dale fletcher
February 2007