Remember that the forum will not run at all until you complete the install.php script.
You did create a mysql database and a database user with global permissions before you started the install.php script
Is this correct?
You will need that info as well as the server host usually locahost to enter into the install script when prompted
Another item is say you name the database 123 with a user name of me.
Some hosts attach a prefix to them such as it would become say
database domain_123
user domain_me
Also the install script is usually good figuring out your paths but not always 100% so don't just skip over them to the next step. Review them and correct them as needed.
