Early on there was posts to the net that using Script black ink worked well. All you needed was a hypodermic or some such to squeeze it in the top of the cart. Also, note that the double capacity HP carts can NOT be refilled. Kind Regards, -- Joe Walters att!ihlpm!bird, NW 31-K14 (708) 224-7189 To know, and not to do, is not yet to know