Before you install AutoCAD 2009, make sure that your computer meets the minimum hardware and software requirements.
Whether the Windows operating system is the 32-bit or 64-bit version is automatically detected when installing AutoCAD 2009. The appropriate version of AutoCAD 2009 will be installed. The 32-bit version of AutoCAD 2009 cannot be installed on a 64-bit version of Windows.
See the following tables for hardware and software requirements.
NoteAdobe Flash Player is
no longer installed by default. If a suitable version of Flash is
not currently installed on your system, a message requests that
you download it from Adobe’s website. If you do not have Internet
access, you can also access the Flash installer on the AutoCAD 2009 product
media.