A. As was discussed in the previous FAQ these icons are just files in the %systemroot%/profiles//Application Data/Microsoft/Internet Explorer/Quick Launch directory. To get the Show Desktop/View Channels icons back create the following files in the Quick Launch directory (or copy from another user)

For Show Desktop, create "Show Desktop.SCF" with the following content:
\[Shell\]
Command=2
IconFile=explorer.exe,3

\[Taskbar\]
Command=ToggleDesktop

For View Channels, create "View Channels.SCF" with the following content:
\[Shell\]
Command=3
IconFile=shdocvw.dll,-118

\[IE\]
Command=Channels