Windows Embedded Standard 7 allows you to add and remove features on your existing image.
This can be done very easily by using the Deployment Image Servicing and Management (DISM) tool. The tool allows you to either online or offline edit your image. The online option enables you to add or remove features while the image is running. The offline version lets you add or remove features from an image which is currently not booted.
The basic command line to add feature packages to your image looks like this:
DISM /online /add-package /packagepath:<PathToThePackageDirectory>
The packages are located on the Windows Embedded Standard Runtime DVD – also known as the Image Building Wizard (IBW) in the following directory: