I think I will be able to take it back to the Viewsonic service desk and get the programmed chip changed. BUT still I think since there is a "Viewsonic Windows XP signed file" is sitting in my add/remove program list , which I am NOT able to remove from the list, may cause the repaired / exchanged new Viewsonic screen (monitor) also to be recognized again as VX2235wm (22") monitor (wrong model). Therefore, I wish to get the "Viewsonic Windows XP signed file" removed from the add/remove program prior to connect the new Viewsonic monitor. Everytime when I try to remove it, Viewsonic Windows XP INF installation screen pops up with the following error message: An installation support file could not be installed. The system cannot find the file specified". Any advise to get this file, "Viewsonic Windows XP signed file" removed from the add/remove program will be appreciated