Mike,
I apologize for once again getting lost in the discussions, or forgetting where I am. The same answer applies, you'll need to change "Numbers" to "Pages" to figure out my intent, I guess. This happens to me a lot and I'm sorry you suffered 🙂
Table cells, wherever you find them, must be formatted. The default format is Automatic, and the program tries to figure out what type of variable you intend. If you type what looks like a number, even with a leading zero, Numbers guesses that you want it to be treated like a number. Of course, we mostly treat numbers by not showing any leading zeros. With Text, we display it just as it was entered, hence you want to format your cells as Text.
Go to the Table Inspector in Pages and use the Format Tab. I don't have Pages 08 on this computer, so I'm again being a bit sloppy in not being able to give you an exact step-by-step, but you should be able to find your way.
Jerry