I hope you have that stored in the fridge, Judy. It's possible that they batteries in the film are dead, but there are ways to change the film casing, which holds the battery and still use the film. I tried, but wasn't successful and yes, wasted a bunch of film... argh!
I'd say just put it in the camera, take a shot and adjust from there, whether with the light/dark ring or focus.
That was with some I bought on ebay. The tz I bought from impossible worked, but with some of the photos, I got these blotchy spots on them. This was taken with tz.
http://www.etsy.com/listing/59659189/rabbit-patch-8x8-metallic-fine-art