[CentOS-virt] Now on to creation of disk images

Mr. Heron was so kind to make a suggestion that I should use disk images to install VMs. Upon further thought, I kinda like the idea. So I re-read the manual and google a little, and discover I still don't know what should be in these disk images.

Should I copy the contents of the CDs to a file or what? I've got a test server at the moment with Centos 5.5 and xen installed as the host OS, but have just downloaded the 5.6 CD ISOs along with the DVD ISO, so I'll use 5.6 for my VMs. I've read about how I can create an image from something that already exists.

Again, any clarity would be appreciated.

steve campbell