You could also create a desktop shortcut with explorer.exe prefix and a space, change the icon then drag that to the taskbar.
Example:
explorer.exe %windir%\system32\mmsys.cpl
Type: Posts; User: Edwin
You could also create a desktop shortcut with explorer.exe prefix and a space, change the icon then drag that to the taskbar.
Example:
explorer.exe %windir%\system32\mmsys.cpl