>> Yeah, but I meant, HDMI is encrypted.
> 
> Not always.  DVI can be encrypted too.

Really? That's interesting. I was told this is the defining difference 
between HDMI and DVI.

>> I'm not sure whether the laptop really supports generating an 
>> encrypted video signal, and if so, from *what*...?
> 
> Does it have Vista?  If so then yes it probably does, for example if you 
> connect a bluray drive (eg via USB if you don't have one in there 
> already) and try to play a movie.  There is probably some API in Vista 
> if you are writing a game and want it encrypted output for some reason.

I was *going* to buy the laptop with a BluRay drive (it was only £10 
more), but it sold out before I could order it. *My* laptop has only a 
DVD drive. (And yes, obviously it's Vista. It's impossible to buy 
anything else now...)

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