300tdi immobiliser problems

hi guys/gals

New to this type of thing so bare with me. basically i have an N reg disco 300tdi which unfortunatley appears to of come to a halt . on inspection it seems like it is the immobiliser. have tried resetting via the security code with no luck. has anybody got any suggestions asto where i could get a replacement part at a reasonable price? have tried the bypass method so now the engne turns over but still wont start and after speaking to a fellow landy owner he said it could probably be the fuel cut off solenoid which would need bypassing but i would then have to pop the bonnet evertime i want to stop the engine. any help would be muchly apprieciated.

the spder for larm is behind rdio on top of heter unit you can get link lead to bypass all immobilser functions or do it your self you can use any suitable wire that is live with ignition but not when not to run to solenoid for the moment

thanks for that james got some one looking at it tomoz

problem all sorted now