DD Poker runs on PC, Mac and Linux. The technical requirements are the following:

PC:

OS: Windows 98 or higher, Windows Vista is not yet officially supported. (See note below)
Processor: 500MHZ (or higher)
Memory: 128M minimum, 256M recommended (or higher)
Disk: 75M hard drive space free
Video Card: SVGA capable of 800x600 and 16 bit colors, 32 bit colors recommended

Windows Vista is not yet officially supported. Although DD Poker 2 may run on some Vista systems, it may not work on all. Donohoe Digital is looking into supporting Vista in the future. Try the DD Poker 2 Free Demo to see if it currently works on your Vista system.

MAC:

OS: Mac OS 10.4.5 or higher with Java 5.0 or higher.
Processor: 500MHZ (or higher).
Memory: 128M minimum, 256M recommended (or higher)
Disk: 75M hard drive space free
Video Card: SVGA capable of 800x600 and 16 bit colors, 32 bit colors recommended

LINUX:

OS: Linux for x86 (Redhat 7.3 or higher or equivalent)
Processor: 500MHZ (or higher)
Memory: 128M minimum, 256M recommended (or higher)
Disk: 75M hard drive space free
Video Card: SVGA capable of 800x600 and 16 bit colors, 32 bit colors recommended