Ok everyone is complaining about GT4 having the jitters.  I initially had this when I was running the standard RCA cables.  Yesterday I went and picked up the component video cables.  While playing with the game set a 1080i I still had the jitters.  So, I went to the menu on the TV itself and selected the "interlaced" video function and I have had no jitter what so ever.  So try thins and see how it works for you.  I have also had no issues with the screen being centered either.
	
		
			
		
		
	
				
			 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		