Before you attempt to install RMS on your server, we need to know:
Do you have Shared Hosting, VPS or Dedicated Server? If it's shared, then your done already, you can not install RMS on it and thus you must lease it from someone else.
Now, let's assume you have a VPS or Dedicated. Good, then you can install RMS. It will be installed at the same direvctory level as your /public_html directory. It means the tree will look like this
/home
/public_html
/Dolphin Install
/RMS_Install
Notice how it's not inside the same folder as your Dolphin, it's at what we call the root install position and it must be installed utilizing the rooot login/password for the server, not the user login & password.
You'll need SSH Access to install/fire-up the RMS and so on, if you need help let me know.