replacement key?

I have lost my only car key for renault laguna 1998. it was only the spare key i had not the fob for central locking.

I have had the barrel lock replaced therefore was using ignition key and separate one for door. I have lost both.

How do I get key fob so I can operate car with central locking and ignition.

Dont know key code.

b8242
September 2009