Can someone help me. I have a new IMAc 27" and was told I could rig up the PS£ to it by using a HDMI cable from the PS3 to a Minidisplay port to HDMI adaptor which goes in to the disply port at the back of the IMAC. Nothings happening and I would hope some one could tell me what to do next. Its my first IMAC only ever used windows.