Digital BW, The Print

Hey all, I got referred to this site from photo.net.  I had a question 
about black and white digital printing.  I don't want to spend a bunch 
of money on the new epson printer because I do very little color work, 
so I can't justify it.  I was wondering however, of a cheaper option 
of dedicating a printer soley to black and white.  I know this will be 
cheaper, but I was wondering how quality would compare and 
archiveablity.  Also, if someone could tell me the steps of what to 
do...I buy X printer and then what?  Do I fill it with all black and 
white inks or what?  I am somewhat lost.  Get back to me when you get 
a free second thanks!