How To Install MySQL and PHP on IIS 6.0
Leave the default setting of the MySQL installation path for the InnoDB Tablespace settings (unless you wish to change it) and click Next.
Select the appropriate number of concurrent connections you want to allow and click Next.
Leave the default networking options settings (unless you have reason to change them) and click Next.
Choose the appropriate character set for your requirements and click Next.
On the Windows options dialog box ensure that both ‘Install As Windows Service’ and ‘Include Bin Directory in Windows Path’ tick boxes are selected and click Next.
In the security options dialog box ensure that ‘Modify Security Settings’ is ticked and type in your new root password. Decide whether or not you wish to allow root access from remote machines or create an anonymous account and click Next.