Minimum:

Memory: 1GB RAM
Processor: Intel Pentium 4 or equivalent AMD
Graphics: DirectX 9.0c Compatible video card 
OS: Windows XP or higher 
Internet: Internet connection 
Hard Drive: 7GB free Hard disc space
Display: 800x600
DVD Recorder
Capture device (for webcasting): any DirectShow Compatible capture device

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Recommended:

Memory: 4GB RAM 
Processor: 3Ghz Intel i5 quad core or equivalent AMD
Graphics: DirectX 10 Compatible video card
OS: 64bit Windows 7 or Windows 8
Internet: Broadband Internet connection 
Hard Drive: 15GB free Hard disc space
Display: 1280x960
DVD Recorder
Capture device (for webcasting): HD DirectShow Compatible capture device with HDMI input