README.md in vagrant-windows-1.3.0.pre.3 vs README.md in vagrant-windows-1.3.0

@@ -45,9 +45,21 @@
    winrm set winrm/config @{MaxTimeoutms="1800000"}
    winrm set winrm/config/service @{AllowUnencrypted="true"}
    winrm set winrm/config/service/auth @{Basic="true"}
    sc config WinRM start= auto
 ```
+
+#### Additional WinRM 1.1 Configuration
+
+These additional configuration steps are specific to Windows7 and Windows Server 2008 (WinRM 1.1). For Windows Server 2008 R2 and newer you can ignore this section.
+
+1. Ensure the Windows PowerShell feature is installed
+2. [change the default WinRM port](http://technet.microsoft.com/en-us/library/ff520073(v=ws.10).aspx) - see below or [upgrade to WinRM 2.0](http://www.microsoft.com/en-us/download/details.aspx?id=20430).
+```
+netsh firewall add portopening TCP 5985 "Port 5985"
+winrm set winrm/config/listener?Address=*+Transport=HTTP @{Port="5985"}
+```
+
 ### Required Windows Services
 
 If you like to turn off optional Windows services you'll need to ensure you leave these services enabled for vagrant-windows to continue to work:
 
   - Base Filtering Engine