Digital BW, The Print

Couple of questions: you said the RIP won't let you print more than 
1440 with matte black.  Does that mean (1) that this is the only 
printing option available (e.g., no photo black, no other papers) or 
(2) that you can't go above 1440 with matte black?

Also, how does the RIP interact with Photoshop and the stadard print 
driver?  Do you just ignore those (e.g., save the file in photoshop, 
close photoshop, open the RIP then open the image within the RIP)?

Also, if you'd be kind enough to post your exact steps for using the 
RIP (since there's no documentation), that'd be great.  Thanks.