How to Install rtorrent?

I'm trying to get rtorrent running but I can't figure out the RPM update command. I thought that -Uvh would update and get all dependencies?

Here is the error:

rpm -Uvh rtorrent-0.5.3-1.el4.rf.i386.rpm
warning: rtorrent-0.5.3-1.el4.rf.i386.rpm: V3 DSA signature: NOKEY, key ID 6b8d79e6
error: Failed dependencies:
        libsigc-2.0.so.0 is needed by rtorrent-0.5.3-1.el4.rf.i386
        libtorrent.so.7 is needed by rtorrent-0.5.3-1.el4.rf.i386

Anyone got a guide for me?

[Jordan]

You need two more RPMs in order to install rtorrent. Depending on what flavor of linux you have installed your system may do these for you. Alternatively you can try to use YUM.

[TotalNoob]

Can you use something like YUM etc..?