A beta version of Windows Live Messenger, considered the next generation of the company"s popular MSN Messenger instant messaging service, is now broadly available for download, Microsoft said Tuesday. Until now, the beta was available to a few million invited testers, Microsoft said in a statement. At the top of the feature list for the newly-released beta is expanded PC-to-phone calling service, the company said. Users already can make calls to and between the U.S., the U.K., Spain, France and Germany. Microsoft said that, starting next week, users will also be able to call the Netherlands, Belgium, Ireland, Finland and Italy via the Verizon Web Calling service.