Apple TV (1st generation) - Manual (Page 9)

Chapter 1 Connect. 9
Network
 A wired or wireless network
 A broadband Internet connection (DSL, cable, LAN)
 Your wireless network password (if you use one)
Computer and Software
To play content from a Mac or PC on Apple TV, your computer must meet the following
system requirements:
 A Mac with Mac OS X v10.3.9, or v10.4.7 or later
 A PC with Windows XP Home or Professional (SP2), or a 32-bit edition of
Windows Vista
 iTunes 7.6 or later
 An iTunes Store account