Referring to your question on braces at http://www.tfguild.org/ubbcgibin/ultimatebb.cgi?ubb=get_topic;f=23;t=000008

It may be that your AutoCAD units are not set to architectural or fractional and your responses are in an unanticapated format. The appropriate response to creating a brace with a 36" leg is to simply type 36 and the Enter key.