Looking through amazon to add a model to my wishlist I found the PCVC720 model which is supported either by the PWC drivers or the OV511 drivers. (Apparently there are two flavours of this model).
So I added it to the list, and waited for my lovely friend to pay for it :)
When it turned up I was pleased to see that it's the newer model, as supported by PWC.
Unfortunately when I tried to use it I soon discovered that it was not supported. Oops.
Not wanting to disapoint my lady friend who was expecting to see me up close and personal .. I looked over the source, and came up with the following patch to make it run.
Minor change I know .. but I was pleased - I only got one kernel panic whilst making changes!