REGEDIT4

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail]
@="Gmail"

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\Protocols]

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\Protocols\mailto]
"URL Protocol"=""

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\Protocols\mailto\shell]

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\Protocols\mailto\shell\open]

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\Protocols\mailto\shell\open\command]
@="wscript.exe C:\\WINDOWS\\gmail.js %1"

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\shell]

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\shell\open]

[HKEY_LOCAL_MACHINE\Software\Clients\Mail\Gmail\shell\open\command]
@="wscript.exe C:\\WINDOWS\\gmail.js"