Hi, I have a couple of no doubt dumb questions. I have a Panny Viera th42PE30B. 1. I get green flecks in my black color tones on my screen. Is this normal or do I need to adjust the grey balance or some other feature. I've improved this with DVE but its still an issue. 2. What's the common interface connection on the back of the tv for? 3. Is it possible to get a HDMi connection for this plasma? Or, what are my High Definition options? 4. Sure whilst I'm at it...Is a descaler/deinterlacer worth getting? Does it significantly improve picture quality? I imagine its only for analogue sources or those that don't output in progressive format? Couple of extra bonus dumb questions there for you all. Seriously though, I'd appreciate any info, thanks for the help.