I am doing an architectural drawing for a home rehab. I have acces to AutoCAD 2000, running on a home PC with 250 meg of RAM, an Intel Pentium 4, 1.3, and XP Pro. I am also using Autodesk Symbols 2000. For some reason, the symbols are not read by the program. They do not show up in the Full Preview, nor do they plot. The symbols show if I overdraw them with the program. None of the symbols are used in Layer O. All layers are "on", and printable. Any advice would be appreciated. Bill