Imagewriter II trough Keyspan on OS X

I'm under OS X.2.8
I've downloaded all the package from Linux (foomatic, PPD , 
ghostcript etc...)  for my old ImageWriter... and installed everything.

My print center recognises the Keyspan and I choose it in the dialog box . 
I choose Apple , then the Imagewriter II . 

The printer is on . 

But ... the printcenter doesn't want to add it to the list . I click and 
click and click, but it doesn't help . I wait and wait and wait .

Does anyone know why the print center sees it but doesn't recognize it ? 


Thank you forward !