or you can check ebay. As far as I know they are all the same. You could probably even buy a charger from wal-mart or radioshack with the adapters and it will work.
"Fix it 'til it Breaks."

Jacob - EiC & Director of Technology
Mac Pro Quad 2.66 - 4GB RAM
160 GB SATA RAID 1 - 650 GB Storage
Quad 19" Widescreen LCDs
Accessorized to the Hilt