Please match your hardware with these minimum requirements from the Tech Specs official Adobe document:
- Multicore Intel processor with 64-bit support
- Mac OS X v10.6.8 or v10.7. Adobe Creative Suite 3, 4, 5, CS5.5, and CS6 applications support Mac OS X Mountain Lion (v10.8) when installed on Intel based systems.**
- 1GB of RAM
- 2GB of available hard-disk space for installation; additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on removable flash storage devices)
- 1024x768 display (1280x800 recommended) with 16-bit color and 256MB (512MB recommended) of VRAM
- OpenGL 2.0–capable system
- DVD-ROM drive
- This software will not operate without activation. Broadband Internet connection and registration are required for software activation, validation of subscriptions, and access to online services.† Phone activation is not available.
* Some GPU-enabled features are not supported on Windows XP.
** Learn more about Mac OS X Mountain Lion support.
Also, please mention what exact error you're getting while installing the product. A screenshot would be nice.