You can use the Netsh command to authorize a DHCP server from the command line.
Removing the shortcuts in Windows for the Shared Documents folder.
If you have a mix of XP and Vista computers in a department or location, how can you configure a GPO so that it is only processed by the Vista computers?
This article explains a command you can use to disconnect the Terminal Server Sessions for a particular server remotely or on the servers mentioned in a text file.
Gpedit.msc has some command-line options that let you quickly edit targeted Group Policy OPbjects.