CentOS Net Install
From KlavoWiki
Download the 200MB net install ISO image and boot from the CD. Configure the appropriate IP settings and select URL for CenOS 6.0. It seems that all sites listed below allow http and ftp connections.
I typically install from USB and not DVD or HTTP/FTP. To send an ISO to USB use iso2usb.
Choose your download source from the mirror list.
For BigPond Users. Free download
http://mirror.aarnet.edu.au/pub/centos/6.0/os/x86_64/
Internode Users. Free Download
http://mirror.internode.on.net/pub/centos/6.0/os/x86_64/
Another Australian site for downloading.
ftp://ftp.monash.edu.au/pub/linux/CentOS/6.0/os/x86_64/
New Zealand Site
ftp://ftp.wicks.co.nz/pub/linux/dist/centos/6.0/os/x86_64/