How do I list file stored inside a rpm file?

You need to use the rpm command as follows:

rpm command example

The syntax is as follows for .rpm file:
# rpm -qpl file.rpm
In this example, list rpm files stored inside httpd-2.2.3-31.el5_4.2.x86_64.rpm, enter:
# rpm -qlp httpd-2.2.3-31.el5_4.2.x86_64.rpm
Sample outputs:

/etc/httpd
/etc/httpd/conf
/etc/httpd/conf.d
/etc/httpd/conf.d/README
/etc/httpd/conf.d/proxy_ajp.conf
/etc/httpd/conf.d/welcome.conf
/etc/httpd/conf/httpd.conf
/etc/httpd/conf/magic
/etc/httpd/logs
/etc/httpd/modules
/etc/httpd/run
/etc/logrotate.d/httpd
....
..
..
/var/www/icons/uu.png
/var/www/icons/uuencoded.gif
/var/www/icons/uuencoded.png
/var/www/icons/world1.gif
/var/www/icons/world1.png
/var/www/icons/world2.gif
/var/www/icons/world2.png

How Do I List Files For Installed Package?

You need to use rpm command as follows:
# rpm -ql packageName
# rpm -ql samba
# rpm -ql httpd