[CentOS] VirtualBox on CentOS 6.0?

I have an older quad-core AMD processor that supports hardware
virtualization on a motherboard that does not support it in the bios.

Eventually I'll swap the mobo out on this box for one that will support
hardware virtualization and use qemu-kvm. I prefer kvm because of
SELinux and sVirt that protects the host from VM breakout should a VM
become hostile.

In the meantime, I want to start work on a web project and want to use
this idle machine and CentOS 6.0 in a VM. What I prototype and learn
will eventually be moved to the production machine using kvm and sVirt.

So...I downloaded and installed Virtualbox 4.x but haven't yet had the
time to check it out.

Any tips/tricks concerning it?


Dave