Using an existing IBM HTTP Server
You must complete the steps on this
page, if you want to preinstall IBM HTTP Server Version 7. If you
want to preinstall IBM HTTP Server with WebSphere Commerce, you must
install the web server and bring it up to the required level before
starting the WebSphere Commerce installation wizard. Also, you cannot
use the quick installation option of the WebSphere Commerce installation
wizard. You must use the custom installation option.