How can I bypass the NATS Emobiliser on my Nissan Micra P reg ?

My Nissan Micra starts but then stalls after about 3 seconds and I think it is the Emobiliser. I have checked for a spark at the plugs, thats OK. It seems to be the injectors are being swiched off so no fuel is getting to the Carbs. The fuel pump is also OK. The manual sugests an Emobiliser fault? My car is a P Reg Nissan Micra 1.3 GS.