Hi guys, I have just recieved my copy of Avia Home theatre Guide and I am having trouble calibrating my Toshiba Strata TV with the Avia disk. Besides performing the 7 initial basic test patterns (Black level, white level, saturation, Tint, sharpness,etc), I do not know how to use the other tests for geomerty, resolution, convergence and frequency. These test amongst others do not explain what I should be aiming for like the initail 7 basics patterns did and I am so lost. Can someone please guide me in the right direction on how to use all the other patterns and how to actually change the convergence of my screen. Lastly, Is it worth getting a service engineer round to calibrate my TV or can I still make all the necessary alterations with this avia disk?