Microsoft announced a plug-in Wednesday that gives Adobe Systems' widely used Photoshop the ability to read and write images stored in Microsoft's HD Photo format. The software, written by Pegasus Imaging and Microsoft with help from Adobe, is available in beta form for Windows users as a free download on Microsoft's Web site. A version for PowerPC- and Intel-based Apple computers will be ready in about two weeks, and the final version should be done in April, Josh Weisberg, director of Microsoft's digital imaging business development, said at a meeting here at the Photo Marketing Association trade show. More at News.com