Funny if you can read this...

Image via Wikipedia

Click on the title.
Go to your app store (that is is if you have a phone with a good camera 3.2 Megapixel+), download a mobile phone Qr bar code reader, run it on your phone and use your camera to scan what you see on your PC screen. Works better on the Androids, iPhone, and any other smart phone.

Check this out for further reading.
Cellphone website
http://www.qrme.co.uk/qr-code-resources/qr-code-readers.html