seam tag library resource?

I am learning IntelliJ9 and Seam at the same time.  In my xhtml file I added the following uri, but I get this warning and the uri turns red.   "Resource registered by this URI is not recognized.

xmlns:s="http://jboss.com/products/seam/taglib"

I went to the Settings>Resources>Configure External Resources, and added the URI,  but cannot figure out were to point "Location parameter"?  I haven't had any luck finding an answer with Google.

Any direction would be greatly appreciated.