How to remove:

1. Run 'msconfig'(on windows 9*/ME).
2. Find the trojan in the start-up programs list.
3. Disable it and restart.
4. Delete the file.

on NT or 2k you'll probably have to find the start-up key in the registry(run 'regedit') in:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Now delete the key, restart and delete the file.

If you're on NT or 2k you might also want to check system.ini or win.ini for a 'RUN=' line. msconfig does this for you in 9x/ME.