Here's a website that will allow you to create your costumized QR Code of your choice.

QR Hacker (http://www.qrhacker.com/)

Here's my samples:

My VCard
http://img545.imageshack.us/img545/6844/qrmyvcardlogo.png

Hidden Message
http://img803.imageshack.us/img803/7031/qriamachildofgod.png