immobiliser problem please help!!!

Feed, ? Do you mean fuel or spark?

When you switch the ignition on are you getting the dash lights lit up?
When you switch ignition on the car reads a code in the key to verify its the correct key this code must match what is held in the cars computer and the EWS module that controls locking and security codes. If the code matches what's held in it, it allows the starter to be released so that when you turn the key to the start position it powers the starter motor. As an added security feature the car gives the transponder in the key what they call a rolling code which must match the next time the key is used. It is not unknown for the synchronization between the key and the EWS /DME car computer to fail which requires it to be resynced. This can be done with BMW software and higher end obd2 scanners to resync the modules.

Worth updating your user details to show your location, someone near you may be able to offer some assistance.

As these systems get older they will start to cause problems. The easiest and cheapest fix is to send off your ECU and have the EWS system, (immobiliser) disabled.

FYI, if the Immobiliser is not activating you wont hear the fuel pump prime and no 12v supply to the injectors. This will also show as a code in the DME when scanned.