Thanks to all who replied to my earlier question and told me where to find
the button that controls the O2 sensor reminder light on the dash. I finally
found a moment on a decent day to lower the spare, crawl under the van and
find the black box near the driver's side front wheel well. There was indeed
a button on the front outside of the box. I pushed it all the way in, using a
small screwdriver. I heard a satisfying click, climbed into the driver's
seat, turned on the ignition .... the light is still on! Any further ideas
will be greatly appreciated. Pease reply to my personal address, as I am not
now on the list.

Thanks,

Woody