Installing/Upgrading Issues

I tried to upgrade to version 3.0 but couldn’t get it to work (every time i went to upgrade.php page nothing happened) then I deleted the files again and uploaded them. Now I get this error:

db_version(); $php_compat = version_compare( $php_version, $required_php_version, ‘>=’ ); $mysql_compat = version_compare( $mysql_version, $required_mysql_version, ‘>=’ ) || file_exists( WP_CONTENT_DIR . ‘/db.php’ ); @header( ‘Content-Type: ‘ . get_option( ‘html_type’ ) . ‘; charset=’ . get_option( ‘blog_charset’ ) ); ?> >
WordPress

WordPress %1$s requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.’), $wp_version, $required_php_version, $required_mysql_version, $php_version, $mysql_version ); elseif ( !$php_compat ) printf( __(‘You cannot upgrade because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.’), $wp_version, $required_php_version, $php_version ); elseif ( !$mysql_compat ) printf( __(‘You cannot upgrade because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.’), $wp_version, $required_mysql_version, $mysql_version ); ?>

I’m running Version 5 for MySQL and version 4 on PHP. So I know i meet the requirements cuz my previous versions of wordpress worked fine too.

Now I’m wondering if I’ve lost everything on this site? or what’s going on.

Please help!