Battery Alert

[Rebecca J. Hoffman]

When my "low battery" alert window popped up the other day, I hit the 
little red close button without thinking. Now it's gone and I can't 
figure out how to get it back. Since I rarely pay attention to the 
battery status indicator in the menu bar, my iBook has gone suddenly to 
sleep on me several times. There's nothing in the Energy Saver 
preferences and I can't find any information on it in Apple Help.

I have an 800MHz iBook.

Thanks,
Rebecca