It basically means that your powerbook can't provide the necessary power to spool up the HDDs. You might either need to get a USB -> IDE/SATA Converter that you can apply external power through a wallwart or the such. When you can't spin up the drive, you cannot read it

Also, it may not be damaged, but you may need to get a Leopard/tiger disc because of the EFI Boot record (GUID). Windows can't read it because it's not an MBR or a boot record that is associated with the whatever windows uses and/or the programs you use can't read the EFI (GUID)

Try finding someone with an intel mac. At least an OS X 10.4 install newer than 10.4.5 or the like.