Cheap SONY digital CAMERA I-LINK IEEE1394 DV CABLE 4pin -4pin
If you belive that from Hong Kong !!!
However i would think your cable is absolutely fine.
Have you checked device manager for any yellow exclaimation marks.
Start/Control Panel/System/hardware/Device Manager/
Look for "IEEE 1394 Bus Host Controllers"
Expand the + key
You have the Compliant IEEE 1394 host Controller
Right click this and uninstall
Reboot and xp will reinstall the controller for you.
Now try your camcorder again.
If this does not work,please post back.
Hope this helps.