If there is Windows XP SP3 32-bit installed on VMWare Workstation with chosed Windows XP Professional platform then after migration to Windows 7 64-bit then Network card is not recognized in Windows 7.
In order to install Network Card in Windows XP SP3 which should be automatically recognized during migration to Windows 7 local VMWare vmx for the specified VMWare machine file should be modified.
After the line: ethernet0.addressType = "generated"
add the following line:
ethernet0.virtualDev = "e1000"
This line specify adding of Intell e1000 NIC.
After Windows XP booting you will be asked to install NIC drivers.
Here is the link from where Intel NC drivers can be downloaded:
During the installation, instal just the drivers, not other components.