Control Sheets is a very simple desktop utility offering quick control over screen saver and display mode settings. It may be helpful, if you have to change these settings often.
For example, automatically starting screen saver may be very objectionable in some cases (e.g. watching video or burning CD-R). Disabling screen saver forever doesn't seem to be a good idea. On the other hand, open control panel, deselect and reselect your favorite screen saver each time may be annoying. Control Sheets always sits in the system tray and is quickly accessible. Using it, you can disable/reenable screen saver in a pair of clicks.
Similarly, Control Sheets may be helpful, if you have to often switch display resolutions. For example, usually I work in a high resolution mode (1280x1024), but some applications looks too small in such case. So, each time I need such an application, I have to switch low resolution mode like 800x600. Again, Control Sheets offers switching between display modes in minimum mouse moves.
Another annoying problem is that after turning to the lower screen resolution and then reverting back desktop icons and open windows appear to be crowd into the upper left screen corner. Control Sheets automatically saves icons and windows positions and restores them after each mode switch.
So, Control Sheets is a very simple utility, but it can make your work more comfortable.