System Requirements
Software:
Mac OS X version 10.5 or later
Safari 4.0.3 or later
QuickTime 7.6 or later; Support for HE-AAC requires QuickTime 7.6.4 or later
200MB of available disk space
HD TV episodes can only be rented in the United States
Ping is available in Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Japan, Luxembourg, Mexico, New Zealand, Norway, Spain, Sweden, Switzerland, Netherlands, United Kingdom, and United States
Windows XP SP2 or later
Windows Vista 32 bit, Windows 7 32 bit
64 bit editions of Windows requires iTunes 10.5 Windows 64-bit version