list files in an unistalled rpm

rpm -qpl  xxx.rpm

A complete guide to RPM and source RPM

Maximum RPM

http://www.rpm.org/max-rpm-snapshot/

List all the rpms, etc:

http://www.cyberciti.biz/faq/howto-list-installed-rpm-package/

Redhat enterprise Linux / CentOS installing kernel source code

http://www.cyberciti.biz/faq/rhel5-installing-kernel-source-code/

How To Extract an RPM Package Without Installing It (rpm extract command)
http://www.cyberciti.biz/tips/how-to-extract-an-rpm-package-without-installing-it.html