I can not add Atari 2600

[Accorsi]

Okay!
SORRY MY ENGLISH I AM BRAZILIAN AND I'M USAMDO The TRANSLATOR
So is the following:

I downloaded a Hyperspin ( 25GB ) set , then add beauty desidi ums systems , blz the first system that was added PS1 everything worked : but when I added the Atari 2600 but it does not work it 's this error:

" Atari 2600 is not an invalided system name or Stella.exe is not suport yet" : and if I run the RocketLaucher he 's right , I do not know if it's the problem HyperLaunch Forwarder , but the stella is 4.0 allowed by the module does not know what to do .
 

PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!