Need to turn on integrated Authentication in IIS?  Here are the steps to do it:

 

• On the taskbar, click Start, point to Administrative Tools, and then click Server Manager.
• In the Server Manager hierarchy pane, expand Roles, and then click Web Server (IIS).
• In the Web Server (IIS) pane, scroll to the Role Services section, and then click Add Role Services.
• On the Select Role Services page of the Add Role Services Wizard, select Windows Authentication, and then click Next.
  
• On the Confirm Installation Selections page, click Install.
• On the Results page, click Close.

Here is the full MS KB