First off, what is an AFCAD file exactly and what effect would it have on RC?TurnipSystem Specs:Motherboard = P5-GL-MXP4 3.0SB LiveATI Radeon X800 GTO (256) Overclocked to 550 Core / 525 Mem2 Gb Geil PC3200 Dual Channel RAM

Hi there,The so called 'afcad' files (usually named AF2 files for addon sceneries in FS2004) contain details about the airports - positions of runways, taxiways, ils's etc.When you rebuild the scenery database in RC runway information is extracted from them so that RC knows where the runways are in your scenery and which runways are ils equipped.All the best,John

Thanks John As long as I do a "rebuild" there shouldn't be any problem then.TurnipSystem Specs:Motherboard = P5-GL-MXP4 3.0SB LiveATI Radeon X800 GTO (256) Overclocked to 550 Core / 525 Mem2 Gb Geil PC3200 Dual Channel RAM