Hey Alex, thanx for piping up so thoughtfully.
Great notion to swap in another cable; trying that when I finish typing this.
Did check under device manager and yes the "VIA 1394 OHCI compliant host controller" is listed and drivers claim to be up-to-date.
And yes there is a DV/in/out setting on my Sony DV cam and it's set to ON.
Again, thanx so much alex for helping.