Tip 53 is especially useful.
"In Windows XP increasing or decreasing the available space to system restore was no more complex than opening the System window in Control panel, clicking the system restore tab, then clicking the settings button and adjusting a slider bar to increase or decrease the space.
In Windows Vista this option has now disappeared. the whole process of enlarging or reducing system restore space has become more complex. Instead of a simple slider bar all such alterations must now be done via command line option."