I had the same question, but found this in FAQ.......
********************
How do I install/upgrade RPMs?
In order to install RPM packages to any RedHat based system one should familiarize oneself with the rpm command. The most commonly used forms of rpm:
This command will format and display the on-line manual pages for the rpm command:
man rpm
This command says (i)nstall package_name, with (v)erbose output and print (h)ashes for a nice display as archive is unpacked.:
rpm -ivh package_name-version.rpm
Similarly, this command says (U)pgrade package_name, with (v)erbose output and print (h)ashes for a nice display as archive is unpacked.:
rpm -Uvh package_name-version.rpm
The general form of the rpm uninstall command is:
rpm -e package_name-version.rpm
********************