Digital BW, The Print

Dear members,

I have a R2400 and was trying to print using Velvet Fine Art paper. 
While in PS CS, I open "Print..." menu and try to select media type. 
From the paper list, I can see "Velvet Fine Art" papaer type (light 
grey letters, not solid black) but I cannot select it.

Anyone knows what I am doing wrong? I have a Mac computer and run OS X.

Thanks in advance for your help.

Best regards,
Nuno