Hi again and thanks everyone for your posts
I've attached some (awful) pictures of it and had a really good look over it. There are two or three very minor scratches on it but nothing I could even get to show up in a photo.
I don't know exactly how it compares to the 400, but I bought it over the 350D, as it feels so much more robust and its a bit quicker (I only take pics of cars on track!!).
As you can see, I still have the box and the original battery, charger and CF card. I am not sure though if I have the software etc that came with it - I'll have to have a dig about.
I can include the standard kit lens (EFS 18 to 55mm) if wanted and you can have the whole lot for £250 including UK postage.
Cheers
Jane