You can install network drivers from any screen in the Disaster Recovery Wizard where the Install Network or Configure Network buttons appear.
To install network drivers
On the Network Configuration screen, click Next after the Disaster Recovery Wizard detects and binds each detected network adapter.
By default, each network adapter is assigned IP addresses from the default DHCP server. To assign a static IP address for each detected network adapter, select a network adapter and then click Configure.
More Information
Performing an automated restore by using the Disaster Recovery wizard
Performing a manual restore by using the Disaster Recovery Wizard