should a HDCP monitor be connected to the PC using DVI or HDMI?

[backtothefuture]

per title...

should I be using a HDMI cable from the monitor to a DVI-HDMI adaptor on the graphics card or connect it directly using a DVI cable...

sorry if it seems like a silly question but not sure which one would give me a HD picture when watching blu-ray etc..

(also how does HDMI v1.3 come into the picture if connecting using DVI?)

 

[backtothefuture]

nice one, thanks for feedback!