Digital BW, The Print

I do seem to recall that the Lyson "system" uses the Bowhaus RIP, 
which I think is now out for win XP, so you should be able to get it 
now. Retail for the RIP is $250, but I assume that it was included 
with your package price, if your package was cheaper than the Mac 
version, then it is likely that you will have to pull more money out 
of your pocket. You could probably get Quadtone RIP to work with that 
ink set, and it is only $50 if you like it enough (shareware).