virtualbox.org

I'm trying to install VirtualBox on a Mac PPC running OS X 10.5.8 with 64 bit hardware but I get a message saying "Unsupported architecture detected!"
Is there any way I can install and use VirtualBox under these circumstances?
Some sort of workaround would be great if anyone knows of one.

VirtualBox will only run on a Mac with intel processors. PowerPC processors are not supported.