Hello santeron,
You are using EasyPHP which is a bundled software : you may not disable MySQL support unless you make the EasyPHP's MySQL unable to run (which will make you experience error messages !).
However you still are able to install more than one version of MySQL using different TCP ports and tweak your php.ini file to make PHP use the MySQL server you want.
Another solution would be to install EasyPHP's MySQL as a service, write down the service name used for MySQL by EasyPHP, then uninstall the service, install your custom MySQL server as a service using the same name (see MySQL documentation for this step) and tweak the easyphp.ini file to make EasyPHP believe MySQL was installed as a service. EasyPHP will then start MySQL service, running your custom MySQL version.
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mega-squall