dear allaslam o alikum             i am new in the field of AutoCad and want to know some information. i have installed AutoCAD 2005. I have the serial number, but i hav't the activation Key. so for this this software is showing 28 days of trial. Kindly inform me that how can i activate this software.waiting for reply.aabid karim

For activation keys and other licensing issues always contact your Autodesk authorized reseller.