1.Copy panel folder of the default 737_800 to the aircraf's folder 2.Overwrite with the panel folder included in FSX_CONVERSION folder 3.Copy model folder from default 737_800 to the aircraf's folder 4.Overwrite with the model folder included in FSX_CONVERSION folder 5.Overwrite sound folder included with sound folder include in FSX_CONVERSION folder 6.copy aircraft.cfg from FSX_CONVERSION You must do all to make it work correct.