Adobe Setup Error: Internal Error 2739

Hello, Techyv people,
I'm installing Adobe Flash CS3 on my laptop (Windows Vista Home).
This error popped up as soon as I launched the installer.
Does "Internal Error" mean the file itself is corrupted or is the error because of my OS, settings, etc.
Please share your ideas, thanks a lot!

Setup has encountered an error and cannot continue. Contact Adobe Customer Support for assistance.
Internal Error 2739.
