After years of hoping to crush Linux, Microsoft is trying to show it can <A HREF="http://news.zdnet.com/2100-3513_22-6095158.html?tag=zdnn.alert">get along with its open-source rival.</A> The software maker is announcing a partnership Monday night that will make sure its next virtualization technology can run versions of Linux that have been adapted for a different, open-source virtualization foundation called Xen. It is linking up with commercial software maker XenSource to offer joint development and support for the two technologies, which take a similar approach.