Ok, looked at the link, in actual fact i had found them yesterday!
The only sockets I have are
AV1 , AV2, IR in, masterlink, A1, A2, AV3 sound input L&R, and the 5 sockets for surround sound.
DVI socket, with connection to an HDMI socket on the pc, pressing menu gives a screen showing state of brilliance, contrast, colour, and sound , no screen showing pc output, perhaps that part of the tv programming is inactive, can it be activated? if so, how? and by me?