Just click on a link bellow, download and install the addon.
You will then be able to switch from one release to another from the WampServer menu.
Warning, all Apache releases are not compatible with all PHP releases :
| Apache 1.3.X | Apache 2.0.X | Apache 2.2.X | |
| PHP 4.X | OK | OK | |
| PHP 5 < 5.2.0 | OK | OK | |
| PHP 5 >= 5.2.0 | OK | OK | OK |
