Assuming it's what's commonly referred to as a "Tray App" (SystemTray
Application), then there *will* be a corresponding executable (.exe)
running. Open 'Task Manager' (right-click on an empty bit of the
taskbar and select 'Task Manager') and under 'Processes' look for any
.exe s you are not familiar with...
Cross-reference this list with items set to start automatically from
the
two registry "Run" keys, under :
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
...also, the nature of the icon itself may give you a clue to help you
along here.
If you cannot locate the item with this method there is a helpful
program that discloses information on all startup items on your
system,
available free from Microsoft called "Autoruns"
To download the "Autoruns" program click on the link below :
http://download.sysinternals.com/Files/Autoruns.zip
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Cheers, Tim Meddick, Peckham, London.