HELP? DPM mode on LG tv??? Using sky hd!!

[noodlepimp]

hi guys just had sky HD installed.My tv has a DVI slot.Which i have connected an adapter and then a hdmi cable.The picture will only be displayed if i select the 576 resolution in the sky menu.Any other setting (720 or 1080) i get "going to DPM mode" and a blank screen.
My tv spec is as follows...


Flat Panel Type: LCD Television
Screen Size: 32 inch
Contrast Ratio: 1,200:1
Digital TV Standard: HDTV-Ready Television
Display Resolution: 1366 x 768 pixels
Display Capabilities
Digital TV Standard: HDTV-Ready - Requires separate receiver to view HDTV signals.
Broadcast Format Displayed: 720p (HDTV) 480p (EDTV) 480i (SDTV)
Broadcast Format Supported: 1080i (HDTV)
Built-in Tuner: PAL SECAM
Native Aspect Ratio: 16:9
Interpolated Aspect Ratio: 4:3, 14:9
Image Quality
Comb Filter: Digital 4-Line
Display Resolution: 1366 x 768 pixels
Brightness: 600 cd/m²
Viewing Angle: 178
Adjustable Color Temperature: Without Adjustable Color Temperature


Is the tv not good enough or have i not set it up correctly?

 

[PaulR]

You may not ever get it to work. DVI has no provision for HDCP, which protects high definition signals, and without this "handshake" the $ly HD box refuses to send an HD picture.

This is to stop people recording HD signals on an external device.

http://www.satellites.co.uk/forums/dreambox-8000/114087-dreambox-8000-sale-yet-3.html post 65 on.

This also mentions a device called an HDCP Blaster but I really can't see how such a thing would work.