Just wanted to say that even though I've had my screen now for almost a year and have often tried to "tune" the screen by using the THX test you get on alot of the Lucas DVDs (ie Phantom Menace et al). I thought I had a good enough picture - how wrong I was. I bought the Video essentials DVD (PAL version) and it has been literally the best money I've spent on the system - for all the money spent on cables, I'm sure has been worth it, this DVD has just made the screen come to life. Well worth the £15. I've not even finished going through the whole DVD yet but even after a few adjustments its worked a treat. Well worth it to my mind - even for a laymen like me.