i know there have been threads about this already but i wanted to post one to get another firm answer. i have a week 37 touch that i got from Best Buy friday. its great, except it has a slight negative screen effect. thats the only problem with it. when i go into BB to exchange will it be as easy as returning mine and them giving me a new one? or will they ask to see whats wrong with it? what else will they ask? if anyone could answer it would be greatly appreciated! thanks.