I have a friend in the Walk-in Cooler/Freezer business that I'm going to be setting up with the latest and greatest ACAD LT, they have an older Calcomp 720 plotter that works well for them but I can't seem to locate new drivers....I've been dealing with hp for the last few years I'm not even sure if Calcomp is still around....any direction would be helpful.. or do they just need to bit the bullet and buy a new plotter? Paul