I have a couple of questions about the Toshiba DLP sets. My Dad is considering the 72 DLP from Toshiba but I have worried him because I have heard from various forums that the bulbs go out about every 2 years and they cost a couple hundred bucks.Is this true? Also a salesmen told him that you only had to remove about 1 or 2 screws and it could easily be changed without calling out a service person. Is this true? If that is the case then I am pretty sure he would move forward with the purchase. Thanks.