It is an e-mail with Hi as the subject and Gone.scr as the attachment. You must run the attachment to infect yourself.
The worm propagates by sending to everyone in your address book. It writes to the registry and saves itself in %SYSTEM%/gone.scr. At startup time it tries to delete antivirus definition files.
delete %SYSTEM%\gone.scr if it exists
associate .SCR files to notepad by running assoc .scr=txtfile
in a cmd or dos window, or just run fixgoner.bat
Delete the registry key [-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\C:\%WINDIR%\SYSTEM\gone.scr=C:\%WINDIR%\SYSTEM\gone.scr] or just run fixgoner.reg