The minimum system requirements:
For PC: 800MHz CPU, 384MB RAM, 30MB free hard disk space, have one of the following Operating Systems: Windows 7, Windows XP or Windows Vista and one of the following browsers: IE 6.0 or higher, Mozilla Firefox, Opera 8 or higher.
It requires a minimum of 128kbps Internet connection or faster and installed audio and microphone drivers or audio headset with microphone.