These days, finding information on the Web can be easier than finding it on your computer's hard drive. But Nat Friedman, a software engineer and open-source-programming guru in Cambridge, MA, is leading an effort to change that with a free program called Dashboard. Dashboard constantly combs through your e-mail, calendar, address book, word-processing, and browser programs and brings together information related to your current tasks before you even know you want it. Say you're reading an e-mail from a collaborator on a project. Dashboard automatically shows the person's contact information, her last five e-mails, and your upcoming appointments with her. Programs like Microsoft's Longhorn will have similar functions but are years from completion. Friedman, cofounder of open-source desktop software maker Ximian, which was acquired by Novell last August, says Dashboard will be ready as early as this summer.