Currently Being ModeratedNov 7, 2012 6:37 AM (in response to detour12)
Where is the pin? If it is nowhere to be found, then it is likely stuck in the adapter port. In this case, you will need a new charging adapter, and you will also need to have the DC-in board replaced (the part of the iBook which houses the adapter port).
** For others reading this, if you have an adapter which has a bent pin, stop using it and buy a new adapter to keep this situation from happening to you. It is a complicated fix to replace the DC-in board.