Mine was installed last week. I don't have the luxury (yet!) of HD TV so it was a simple scart for the engineer!
Engineer was top notch and completely honest when he mentioned 'It was only the second one he had done' and he was still getting to grips with it. Set it up for 16:9 and that was it.
*Make sure that he sets up the HD though. The engineer mentioned if you don't set the HD connection up on the box
first then you can lose the picture and it kind of makes things slightly complicated.
You shouldn't need any instruction to be honest.. all you need is the V+ button and the Home button
Just get him to bob the BBC HD channel on before he goes!