Digital BW, The Print

I just purchased a set of MISPRO inks for my 1280.  I plan on 
switching the printer from dye inks to pigment inks.  I have a set of 
MIS spongeless carts filled with dye inks.  I would like to flush out 
the dye inks and use the carts for pigment inks.  I was thinking of 
using Windex.  Does anyone have any suggestions?  I was also going to 
use Windex to flush the dye inks out of my 1280 before loading it with 
the pigment inks.  Any comments?

Thanks in advance!