My business partner was telling me that he has been getting messages from Quickbooks with the message that older versions of Quickbooks WILL NOT WORK with Vista.
That's correct. Microsoft, to be fair, has a pretty good rebuttal on that which I read the other day (sorry, no link, but I think it was on Dvorak's blog). Evidently the programmers have for years ignored MS specs and have been somewhat renegade. It finally caught up.
Although we use Quickbooks for my company and have since the first DOS version, I am starting to look upon Quickbooks like I look on Symantec's products. Bloated code, poor operation, primary function is a cashectomy from customers.