I just had a HR-21 installed and I see it has HDMI port.  My HDTV only has a DVI input (2003).  I saw a cable that is HDMI on one end and DVI on the other.  Should I use this instead of the componenet video cables - will it affect my HDTV from the HR-21? I know I still need the audio jacks but will the picture be that much better using the HDMI/DVI cable?  I have a Panasonic 53" - 16x9 rear projection HDTV and use the AM-21 for OTA (HD).  
Thanks!
				
			Thanks!
 
	 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		