Unix is a fairly generic term, you have Linux, BSD, System IV & V, AIX, HPUX, etc. Fortunately most unixes work pretty much the same and if you are familiar with one version then you can find your way around any.
You will probably control the servers through SSH, but you may also have VNC access. There's really only a few config files you have to touch, perhaps you could tell us more about what you want to control and what kind of access you have.
