Hi I've been an Augi member for a long time, but this is the first time I've used the forum. I just loaded the land desktop 2006 and the civil 2006 with windows xp and the latest service pack. I can't open multiple drawings. Can anyone help? I tried the SDI in the system variable and it has a default of 2. But the only valid numbers are 0 and 1. I tried both and it would not let me change it. the only drawing open is the default "drawing 1". Did I miss something in the installation?