I would ask your provider about this. If a control panel is not advertised 99.99% chance your not getting one with the server. You don't need to have a control panel, but it does make things a lot easier.. assuming you are a newbie to dedicated servers, I would do some research on the various panels available, i.e. cpanel, h-sphere, plesk, ensim, etc.
The server I got from rackshack.net came with a control panel that can be used by the server administrator to create virtual domains / resellers, who in turn have access to the control panel to customize accounts, etc. You should only need one control panel on your machine, which will be accessible on many levels (admin./domain manager/resellers/end users). I'm currently using Ensim, which so far seems to be great. You might want to look into it!