autoblog error

hey everyone i set up an auto blog today on my site and i get error

Fatal error: Call to undefined function mb_substr() in /home/mintzlaf/public_html/wp-content/plugins/statpress-reloaded/statpress.php on line 1188

any help on how to fix this would be great

You have an outdated PHP version. mb_substr() needs (PHP 4 >= 4.0.6, PHP 5). MultiByte-Support needs to be enabled, there should be an extensions called "php_mbstring" - it is needed to be activated in your php-configuration. Unless you're living in a country with multibyte characters (eg Japan, China etc...) then you can safely use the old 'normal' version of this function. ***Always make a copy of the original file first!!!!!*** open the file named statpress.php with your favorite TEXT file editor (notepad will be fine). then replace all occurences of the word 'mb_substr' with 'substr'. Save the changes and upload the newly modified statpress.php file on your webserver. That should fix things.....I think