https://fedorahosted.org/liveusb-creator/
Took very long to fine the CenOS 5 live cd:
http://vault.centos.org/5.5/isos/x86_64/
For Linux, do:
yum install liveusb-creator
Other option, worked for Alex:
http://unetbootin.sourceforge.net/
http://unetbootin.sourceforge.net/unetbootin-windows-latest.exe
