Yes, the "System Tray" is located in the right corner of your Task Bar and it use to be called the "Notification Area". A lot of programs and system services place icons there for easy access and use. When you have several icons in the system tray, the system places a fat looking arrow which opens when clicked to show the hidden icons. The system "hides" some icons to keep the System Tray or Notification Area, whichever you prefer to call it, looking clean and streamlined.
Now, if the icon you need is not showing in the System Tray, click on the arrow, then quickly place your cursor over the icon you need to hold the icon open in the System Tray. You have to do this as the System Tray will close quicker than you would expect.
Further information for configuring and managing the System Tray: Right click on the Start Button. In the Shortcut Menu which appears, click on Properties. A window with the Start Menu and Taskbar/System Tray dialog configuration box appears. To manage the icons in the System Tray click on Taskbar Tab. On the Taskbar Tab there is a button called Customize at the bottom right. When you click on Cutomize a new dialog box appears with a list of all current and past items the System Tray has used since the computer OS first completed setup after it was purchased.
In the window for the icons of the System Tray, it lists all current items and has a section next to it called "Behavior". Click on the icon you wish to configure or manage. It opens a drop down box with three options: Always Show; Show only When Active, which means when it is active it will appear in the System Tray, otherwise it will be hidden behind the arrow; and finally, Always Hide, which keeps it behind the arrow at all times. With this option you can always go back to this section, click on the icon of interest and select a different option. You can go back and forth between these three options at any time. It is useful information to have when working with System Tray Icons.
The Icons in the System Tray are intended to provide an easy access to often used programs and the programs main features and uses. I like this and find it very usefull but others dislike it very much. If you do not like an icon placed in your system tray, often during the installation of a program an option is given to decide if the user wants an icon placed in the System Tray, on the Desktop as a shortcut, sometimes on the QuickLaunch bar. Watch for these options when installing a new program. If you wish to change the behavior of icons in the System Tray you can simple remove the program from your system then when you install it again watch for the option regarding icons in the System Tray and uncheck the box for placing an icon in the System Tray.
Good luck with your System Tray and have a nice day.