The beige G3 is a beast with the pram battery issue. If you search you'll find at least a post or two on it. Especially if it has os X on it. Unplug, pull out battery, press power button, put battery back in, If you have a OS cd put it in the drive and press C on boot. I've found that easiest to get the pram back to normal.

You can try the normal pram zap procedure but I never had any luck with that.