How to Recover HD Data From PowerBook G4 If It Is Stuck On Grey Screen ?

Hey ,
I have a PowerBook G4 and after a force reset it wont go past the grey screen with apple logo on it.
Things I have tried:
- Command + Option + P + R
- Took out the battery and held the power button for 10 seconds
- Used Boot Disk to repair permissions and disk (ERROR: Invalid Leaf Record Count)
So hoping that at least some of my files are still there how do I recover them ?
I have a MacBook Pro with 10.5.8 available as well as an External HD.
Thanks for all suggestions in advance !
--best A

[Data Rescue|http://www.macupdate.com/info.php/id/10259] may help, but first try booting via Target Disk Mode.
http://support.apple.com/kb/HT1661
Joe

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