Security alarm?

The anti-theft alarm keeps going off when I try to open the car door to get in the car. And I dont know how to turn it off. It will go off on it on when it is finish making the alarm noise, I dont have a regular alarm either except the anti-theft.

Someone tried to steal my car. I replace. Mobilizer and the computer and had it coded and tried to crank it just like I was instructed. It still wont crank. What could the problem be and what else could I try?

When I use my keyless entry remote to lock the doors, all of the doors lock except the driver's side and the back right passenger door. What is the cause of this problem?

I have a 99 Honda Accord with 82000 miles the problem is the alarm just keep going on and off at first we taught that maybe a cat or dog hit it then after about 5 minutes the alarm went on again and contunuie to do so every 5 minutes. All the windows, doors, hood and trunk are all closed so when I went to the dealer they told me that the Hoodswitch needed to be replace and would cost me $406 plus tax and my warranty would not cover it so I told them to just leave it I dont have to money to pay for it so what I did was remove the fuse for the Horn since the horn and the Alarm had the same fuse and now I dont have a horn. My question is what is a hoodswitch? Can I just get is at some local auto shop and have my mechanic put it I dont want to pay dealer price? If so where can I find this hoodswitch?

Ok is there a way I can obtain a diagram as to where the switch would be located at? So I can fix the problem as soon as possible like you said taking the fuse out is not the solution. Wow thanks for mentioning that is would only cost me $10, I cant understand why the dealer would so much over price me for such a thing.