Hey Raggie, thats great! So you think the battery isn't working well? If it wasn't used much then the display probably isn't accurate, there are several threads on apple's support site talking about it being an "estimate" when I first got mine it ran through the first 3 bits of the display in the first 2 hours and then lasted like 6 on the last one.
You should first make sure the firmware is up to date, there was an update recently that improved the battery display and life. Then use it till it turns off and then charge it all the way back up again.
If the battery life is still bad, then somebody left the poor thing in the heat in the car repeatedly or something like that and you'll be out another $50 for a new battery /ubbthreads/images/graemlins/frown.gif