Dear all I have few doubts regarding the acad versions. 1) Can i use the acad2000 compiled dvb file in acad2004. 2) I am trying to open the autocad application thro' vb,which works fine in acad2000 but says an error activex component cannot create object in 2004.What can be problem in this. 3)What is the alternate for axauto15.dll in acad2004. When i tried to register the file it is not getting registered. Thanks in advance. Regards Sri