Digital BW, The Print

I'm having such good luck with the UT-2 inks in my 1280 that I've 
decided to use them with my 1270 also. My questions are: how do I 
get the 1280 driver to push the 1270? (Paul R. says it's easy....) 
Will the 1280 driver operate both a 1280 and a 1270 on the same 
computer? I'm running under Windows XP. Any advice would be much 
appreciated.
BJM