So my 2 Philips SPC880NC's turned up at weekend; Bog standard CCD web cam. Unfortunately these do not work under Windows 7! :(
Fear not. There is a way to hack them to into SPC900NC's which are recognised by Windows 7.
So ... Both have been patched as per this web site; and are both seen in Windows 7.
One is to be modified for connection to my microscope, the other is to be a spare incase my proper astro scope bites the bullet.
For £12.80 + vat for the pair, I don't think its a bad investment?