Break in can be done in 2 ways. The reason for break in of a phosphor based display is given below.
During the initial life of the plasma, due to the different half lifes of the different phosphor elements, the drive voltages of the different phosphors are different. As such, some might be driven harder than the others to mature them quicker.
So during this stage, u shd avoid long viewing of static bright logos/images.
If u want to use the break in dvd, then set ur contrast and colours high and continuosly run the full screen images till above 200hrs.
If u do not want to run the break in dvd, turn down the contrast/colours for the 1st 200 hrs and refrain from long hours of static/bright logos/images. (One advise, on the panny plasma use cinema mode if u plan to not use the break in dvd).
U can mix and match the above, just remember that during the viewing of normal content to turn down contrast and during the use of the break in dvd, u hit high contrasts.
Hope this helps.
thanks bro, will try to get it done once i receive my set.....