You don´t make clear what is the error message, and what is the command you are using. I suppose you are not specifying the path for the rpm file correctly.
If you have a rpm file named coolstuff.rpm in the directory /home/russell/Downloads/rpms, and you are in /home/russell,
$ cd Downloads/rpms
$ rpm -ivh coolstuff.rpm
or if you are in any other place,
$ rpm -ivh /home/russell/Downloads/rpms/coolstuff.rpm