In the Special folders in My Computer section you can add/remove the following folders:
Dial-Up Networking: To show or hide the Dial-Up Networking folder in My Computer.
Printers: To show or hide the Printers folder in My Computer.
Scheduled Tasks: To show or hide the Scheduled Tasks Folder in My Computer.
Web Folders: To show or hide the Web Folders folder in My Computer.
In the Let Windows know where the file is placed section you can browse to an executable file and then you will be able to launch that program just by typing the filename in the Start -> Run dialog. Just like the PATH variable you used to put in the autoexec.bat
In the Special file icons section you can view the icons in the files as icon of the file. If you want to see how a bitmap looks without opening the file just check the bmp option and the bmp files icons will be the bitmap. It's pretty good to check the *.cpl option, then your *.cpl files in Windows\System looks like the icons in the Control Panel.