Problems with PHP after MySQL Upgrade

Here's the issue. I use MySQL as my database backend. I used to have php running fine and I used phpMyAdmin to do any admin functions I needed to on MySQL. I recently upgraded to MySQL 5.x and ever since I've gotten the following error messages. When I try to use extension=php_mysqli.dll This error follows The procedure entry point myslq_stmt_bind_param could not be located in the dynamic link library LIBMYSQL.DLL Then I the following warning: PHP Startup: Unable to load dynamic library 'c:\Program Files\Apache Group\Apache2\PHP\ext\php_mysqli.dll' - The specified procedure could not be found. When I try to use php_mysql.dll I get the following errors. The procedure entry point mysql_thread_end could not be located in the dynamic link library LIBMYSQL.DLL PHP Startup: Unable to load dynamic library 'c:\Program Files\Apache Group\Apache2\PHP\ext\php_mysql.dll' - The specified procedure could not be found. I've uninstalled and reinstalled Apache, PHP, and MyPHPAdmin - and I still get no love. Like I said, worked great before I upgraded to MySQL 5.x