[CentOS] Resolving dependencies from the command-line

CenOS 5.4 x64

I'm stuck at the command-line.  I'm only familiar with the RPM
command, but AFAIK, that cannot automatically resolve any dependencies
when installing packages.

Is there a command-line utility that I can force to automatically
install all the dependencies for a particular package?  I seem to
remember a new UI was added recently that could, but I have to
complete this from a prompt.

Marco