Macintosh

•  Mac OS X 10.5 or 10.6
  
•  1.8 GHz Intel Core processor or higher
• 2 GB RAM or higher
• 100 MB of available hard disk space
• OpenGL 2.0 capable Video Card with 256 MB VRAM at 1024x768 or higher. 1600x1200 or higher is recommended.
• Adobe Photoshop CS2, CS3, CS4, Elements 6, 8.
  
• Adobe Flash Player 10 or higher
• Internet connection for activation, update checking and tutorial movies
• Integration with Lightroom requires Photoshop Lightroom 2 or higher (Lightroom integration requires a full version of Photoshop)
  
• Integration with Aperture requires Apple Aperture 2.1 or higher
• DVD drive for installation from disc
• Administrator privileges to install and uninstall
  

Windows

• Windows XP with Service Pack 2, Windows Vista or Windows 7
• 1.8 GHz Pentium 4 class processor or higher
• 2 GB RAM or higher
  
• 100 MB of available hard disk space
• OpenGL 2.0 capable Video Card with 256 MB VRAM at 1024x768 or higher. 1600x1200 or higher is recommended.
• Adobe Photoshop CS2, CS3, CS4, Elements 6, 7, or 8.
  
• Adobe Flash Player 10 or higher
• Internet connection for activation, update checking and tutorial movies
• Microsoft .NET 3.5 framework or higher (installed automatically if missing)
  
• Integration with Lightroom requires Photoshop Lightroom 2 or higher (Lightroom integration requires a full version of Photoshop)
• DVD drive for installation from disc
• Administrator privileges to install and uninstall

Note: Many video cards support OpenGL 2, but require up-to-date, manufacture specific video card drivers to enable this support.