Enabling mysql on local php website

I setup a development instance on my PC of our corporate website today. The website was written in php, with a mysql back-end. I ran into a problem with php talking to mysql. Mysql is not enabled by php out of the box, so here are the steps that I had to follow to enable it:

1. Verified path to php installation dir ("C:\Program Files\PHP") was in the PATH string
2. Verified extension dir was set in the "Paths and Directories" Section of php.ini
1. extension_dir = "C:\Program Files\PHP\ext"
   
3. Downloaded supporting mysql dlls
1. Put libmySQL.dll in the php installation dir
2. put php_mysql.dll in extension_dir
3. put php_mysqli.dll in extension_dir
4. Enabled extension DLL's in the Dynamic Extensions section of php.ini
1. extension=php_mysql.dll
1. extension=php_mysqli.dll