The Rockville, Md.-based firm’s poll results have proved prescient, predicting the rise in PC sales for Apple and Hewlett-Packard (HPQ) and the downturn for Dell (DELL) in recent years. The latest ChangeWave consumer poll found that 29% of likely notebook and desktop PC buyers in the next 90 days are planning to get a Mac. That’s higher than consumer purchase intent for HP laptops (21%), HP desktops (24%) and Dell laptops (28%). But Dell had higher demand for its desktops (31%). Why the big change? What about in the business?  Apple is improving but didn’t fare nearly as well. Nearly one-in-four respondents (24%) of the most recent poll, completed in early November, say that the release of the Leopard operating system makes them more likely to buy a Mac in the future. Apple still has a long way to go to get any significant market share.  They are starting from such a small percentage that it even significat gains still put it at a small percentage of the overall market.  For more numbers, head over to the article. Or take our survey.