I have an application where I want to record a still image every 6 - 8 seconds, from a remote (from the pc) via IP.

Any resolution of VGA or greater would be great.

Can anyone suggest any cameras or suppliers (UK based) ? I know I can but a logitech webcam (under XP), but was looking for something a little more professional....

Any suggestions greatfully received.

You might be able to do this with WIA, but not with TWAIN.

There are no cameras I know of that will allow you to take images without the camera interface showing.  Even then it's usually up to the client to press a button to take the picture.