Hi,
You will get better response to your questions by posting on the forum - http://www.boonex.com/unity/forums/#group/Dolphin.htm

For now what you need to do is -
1. Find out from your hosts how to log in to your webspace with an FTP program. They will also tell you where your root is.
You root is the place that a browser goes when you type in a domain name such as www.yourdomain.com
The root is normally the folder called public_html/
You navigate to that folder with your ftp program.
2. see more Now you are in the root (public_html) you use the ftp program to upload all the dolphin files to this place.
3. When you do that you need to start the install. First lets assume that your domain name is www.yourdomain.com
All you have to do to start the domain is type in to a browser www.yourdomain.com/install/index.php and the program will start the install process.

If you have any more questions go to the forum I mentioned above. There is lots of useful posts there already and some very helpful people.

Cheers
Max