Car Alarms: 1997 chevy venture factory alarm, passkey iii, chevy venture

Question
i never recieved a responder key with the van all i have is a non responder key and no remote
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The text above is a follow-up to ...

-----Question-----
i unlocked my driver side door with the key and when i opened the door the alarm went off so i tried putting the key in the passenger side door and it still didn't stop so i started the van and it started but stopped so i started it again and it stopped again and the alarm was still going off so i put the key in the back door and the alarm shut off then when i went to start it it wouldn't start. is there some type of security device or something keeping it from starting now?
-----Answer-----
It has the passkey III system from GM and yes,
it is a pain.

Ok, then this is what you should do...

Go get 2 non transponder keys cut at
the hardware store for 3 bucks each.  
Get a universal bypass module (key-in-a-box style)
at www.REMOTESTARTCENTRAL.com for 25.00.

Then wrap the coil around the key cylinder,
secured in place with hot-glue..connect the
status input wire to chassis ground and the
positive to ignition...no more transponder
key required.  No dealership will program
a key to a non matching VIN ECM.

Besides, the total cost on this is
substantially less than what a dealership
would charge.

I hope this helps.
It is truely the cheapest way
to get around it for good.

A.

Answer
Then you are going to have to have GM make you one
unfortunately. There is no way around that that
I know of at this point.

Sorry.

I hope you can get it done relatively
cheap. They will need the VIN number an your
registration so a key can be made.

Good luck with it.

ALARMTEK