Now click the “ Run Old Installer” button.Next, using the ‘…’ button select your AutoCAD 2000 CD.Select the 2nd tab titled “Old AutoCAD Installer Reviver” by clicking on it.Now, start the Longbow Converter tool by double clicking the Longbow Converter shortcut on your Desktop… .Before starting, we recommend turning off Windows UAC.Obtain your copy of the Longbow Converter here.