How can I bypass the security in my 01 Mazda MPV?

What is your question?

I have been having trouble with the security system in my van to the point it willl not start up at all but the alarm keeps going off. I've everything to reset the security system but it will not. So I have just purchased a new key and tumbler that are NOT anti theft and I have tore the whole steering wheel apart and have replaced the tumbler, but I now need to find a way to bypass the anti theft system so I can use my vehicle again. Can you assist?

What makes this problem better or worse?

Nothing at all

How long has your 2001 Mazda MPV had this problem?

About a month