Alarm Set. How to Manually Reset.

I just returned from a two week vacation to find my 1999 Dodge Grand Caravanís battery dead. When I hooked up the charger, the lights began
to blink, the horn began to honk, and the "Alarm Set" light on the dash flashed, just as if the alarm had been triggered. I disconnected the positive terminal and fully recharged the battery, hoping the problem would reset. When I reconnected the charged battery, the lights and horn went off again. I tried to stop the alarm using the key fob, but the doors would neither lock nor unlock using the key fob controls. The van will start, but soon stalls, as is should when alarm is triggered.
I have tried my key fob and my wifeís key fob and neither will work.
Anyone have an idea what has happened here? Last year I had lightening hit the van and the computers went haywire. Could this be another lightening hit? Is there a manual way to reset the alarm or to reset whatever communicates with the key fobs? Thanks for any help.
Posted using the interface, at author's request
Articles individually checked for conformance to usenet standards
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.