*URGENT* disconnecting car alarm

[-Nighthawk-]

So my car alarm started playing up today :\
First of all it wouldn't unlock and disable when I used my key, but after about 30 tries it finally unlocked. But now the car alarm seems to be going off every 5 minutes after I lock.

How can I disconnect it? It looks attached to the engine and some other parts of the car :\
Only solution so far is to keep it garaged (too sensitive?) but I need it to get to work tomorrow which it will be going off at the station...

Need help ASAP,
cheers

[vipfto]

disconnect power source to alarm and remove backup battery
but make sure the alarm is dissabled (not sure but may run risk of it immobilising car)