automatic unwanted email sent on startup

From: Robin (robin_at_despammed.com)
Date: 12/26/04 

Date: Sun, 26 Dec 2004 12:55:06 GMT

Firstly, thank you to those who kindly answered my last query on 24
Dec.

When I start one of my user desktops I get a message in a small grey
rectangle over the system tray from AVG (free edition) that an email
is being sent to a hotmail address(always the same one). As soon as I
saw it I swtched off. Using other user desktops it doesn't appear.

AVG doesn't see any virus in it and I have run several virus and
spyware checkers, including Trend Micro Sysclean, Pest Patrol, Spybot,
and Adaware. They show my system as clean. But if I try to enter the
desktop in question---same problem.

Any help welcomed.

TIA

Robin