hmmmm. First, make sure that you are root. Only root can install and remove packages. Your prompt tells you if you are either root or not, eg:
1 - bash-2.5b$
2 - bash-2.5b#
At the case 1, you are a regular user. The dollar symbol tells it. The case 2 you are root. To become root, if you didn't know, type su
Ok, now installing the packages. You are using wrong commands. Linux is a case sensitive OS, unlike windblows.
vh <name or the package.rpm>
is different of
vh <name of the package.rpm>
You can only use rpm- Uvh if a package is already installed and you want to Upgrade
it. The letters means:
i = install
v = verbose
h = hash (to show ### hashes while installing)
U = update.
Tell me if it works and welcome to LinuxQuestions.org and a Happy New Year!