You cannot remove virus's with a trial of something. UNINSTALL the Sophos Trial First. THEN Download one of the FREE anti-virus programs noted here Some good FREE alternatives are:

I don't care which one, choice is yours. But in order to continue and insure removal you MUST download, install, update and scan and remove anything found with one of those programs. Manual removal is not going to do it...some yes, but not all.

Empty your Eudora Trash. Some files there are infected. Empty your Recycle Bin.
You have a Vundo infection for sure.
Please do the following;
Download VundoFix to the desktop.

* Double-click VundoFix.exe to run it.
* When VundoFix re-opens, click the Scan for Vundo button.
* Once it's done scanning, click the Remove Vundo button.
* You will receive a prompt asking if you want to remove the files, click YES
* Once you click yes, your desktop will go blank as it starts removing Vundo.
* When completed, it will prompt that it will reboot your computer, click OK.

Note: It is possible that VundoFix encountered a file it could not remove.
In this case, VundoFix will run on reboot, simply follow the above instructions starting from "Click the
Scan for Vundo button." when VundoFix appears at reboot.

It is the VundoFix log we need this time.
Look here;
C:\vundofix
See if you can then find C:\vundofix.txt
Post it here.

 You also need to tell that AVG Anti-spy program to FIX/Quarantine anything found.
Please do those steps again and then run another Kaspersky scan and another HJT scan.
Post the Vundo Fix log, AVG log, Kaspersky log and HJT log.