One of my readers sent me a link to an awesome program called "SweaterMaker' that will run on all versions of windows. This program is very inexpensive compared to DAK & doesn't have the issues that 'Knitware" does. I haven't tried it, but she tells me that it works great & that you can print your patterns out too. It is a charting program that does all the math for you, similar to the two other programs.