AutoCAD 2000 holds a special place in the history of design. It was a robust, game-changing tool that trained a generation of engineers. However, the "Portable" versions circulating the internet today are often relics best left in the past.
HKLM\SOFTWARE\Autodesk\AutoCAD\R15.0\ACAD-1:409\ProductId HKLM\SOFTWARE\Autodesk\AutoCAD\R15.0\ACAD-1:409\SerialNumber HKCU\Software\Autodesk\AutoCAD\R15.0\ACAD-1:409\Profiles\<<Unnamed>> autocad 2000 portable