How to re-create a Search Server Express Web Application (after I deleted it before)

Hi,

I installed Search Server Express on an empty server. You probably know that SharePoint Foundation is also automatically installed when you install Search Server Express.

In Central Admin,  I want to create a new SharePoint web application on port 80 but the Search Server Express web application already use this port.

So I decided to delete the Search Server Express web application and then create a new web application (my SharePoint Foundation web site) on port 80.

Problem: I would like to re-create the Search Server Express Web Application, but how?

Thanks

Charles