Thanks for that info everyone. I'll have to go for a projector with RGB capable scart inputs then - more of a hassle for cabling as it needs to go over 10 metres under floorboards. I think I need to make up a cable using individually screened cables
something like this:
http://www.maplin.co.uk/Module.aspx?...dID=2&doy=20m4
Then I just need to find which of the SCART's 21 pins to use - surely not all of them??