Hi, this is because your my sql database is not correct. When it tries the create the database, process broken and it cannot create the standart format and tables of the database.
tell your hosting provider, they set max_execution_time to 18000 in your php.ini file
or if you have backup of a databse of fresh magento installation, first go to phpmyadmin and dump the backup into your mysql database.
then delete the app/etc/local.xml file and start your installation again.
select your database you dumped and its OK
if you dont have fresh databse and you try to install 1.6.2 you can import attached backup and you can continue.