Kids, you may have to ask your parents to explain some of these terms. But last month, Cyma Systems began offering what it called "aggressive upgrade pricing for legacy DOS-based accounting software clients" for the rest of the year. At Solider Field this month, some of us Intuit attendees were debating how much DOS is out there, particular in areas like Accpac Plus since the world did not come to an end on Jan. 1, 2000. (Well, I don't think it did.)