By default, WinPE 2.1 x86/x64 supports the e1000 NIC driver which is used with VMWare virtual machines. However, a virtual machine created with Windows 2003 x86 Standard Edition can only use the VMware Flexible NIC which is not supported by default in WinPE 2.1.
To add VMware Flexible NIC support into the WinPE 2.1 x86/x64 automation environment: