Thanks 2nyRiggz.
I run it down completely once a month for sure. Most days, when I wake up, I read the news, MR, have coffee with the computer unplugged for 20-30 minutes, then take it to work and plug it in. It charges back to full in 20 minutes or so, then stays plugged in the rest of the day. That includes when I go home and work in the evenings as well.
I ran my iBook battery down in less than two years. I'm doing better with the Powerbook. I try to read the instructions (guidelines), but apparently I don't get it.