Setting Default WebPage in IIS 7.5

I'd a HD problem in machine where my Intranet IIS server was installed and I've reinstalled all the software. I've restored the site data into new IIS but now, when I type the server address in a browser in a client or even server machine, it doesn't find the page ("Default.aspx"). I can allow "Directory browsing" and click the file but, obviously, I don't want this alternative, neither obligating users to type "Default.aspx" in the end of the URL.

Maybe it's a very simple configuration, but I've cannot found it in IIS.