How to install openfire on a remote server?

I am trying to install openfire as a sub domain on a remote server openfire.mysite.ca

I have made the database, added a user, made a new folder in filemanager public_html/openfire and uplloaded all the install files to the openfire folder.

how do you get to the install program, to install the program?

sorry i am a newbie, any and all info greatly appreciated