Your network contains an Active Directory domain named contoso.com.
All servers run Windows Server 2008 R2.
A server named Server1 has the Windows Deployment Services (WDS) server role installed.
A custom Windows 7 image is available for download from Server1.
A server named Server2 has the Hyper-V server role installed.
You create a virtual machine (VM) named VM1 on Server2.
You need to deploy the Windows 7 image from Server1 to VM1.
What should you do first?