You can free up hard disk space by uninstalling the practice files that were installed from the companion CD. The uninstall process deletes the practice files that were installed in the Documents\Microsoft Press\WindowsVistaSBS_Dlx chapter-specific folders, but does not delete any additional files you created while working through the exercises.
Follow these steps to uninstall the standard practice files:
On the Windows taskbar, click the Start button, and then click Control Panel.
In Control Panel, under Programs, click the Uninstall a program task.
In the Programs and Features window, click Windows ...