Sony Dcr Pc9 Driver For Mac

I'm trying to use a Sony DCR-PC9 NTSC with iMovie and a Powerbook G4 and I keep getting a 'No Camera Attached' message. I tried cycling the power (turning cam off/on), unplugging the camera battery, bringing the date and time up-to-date and also tried ejecting and re-inserting the cassette. Finally, I tried the special SONY solution at this user site: http://www.danslagle.com/mac/iMovie/usage/5020.shtml
(going to 'VIDEO EDIT,' setting to 'READY,' and then setting MARK IN in the VIDEO EDIT menu), but nothing improved.
These are my settings:
'TAPE SET->REC MODE is set to 'SP'
A/V->DV OUT is 'ON'
'DISPLAY' is set to 'V-OUT/LCD'
'VIDEO EDIT' is set to 'READY'
'EDIT SET-> CONTROL' is set to 'I-LINK'
'DV-IN' appears on the LCD screen whenever I plug in the FIREWIRE/I-LINK
Is there a special mode (in the FN Menu or elsewhere) to employ with this camcorder in order to export to the computer? (I have been trying to use 'VCR' mode.)
My older camcorder (a Sharp VL-NZ100) works with iMovie, using the same ILINK/FIREWIRE cable.
Is the Sony DCR-PC9 NTSC different from the Sony DCR-PC9? I have a PDF manual for the latter, and it some options seem different.
Is this a commonly-reported problem with SONY? If anyone knows what to do, please let me know. I can't wait to get this thing working!
Kuritarou