Netbooks using current-generation Intel Atom chips are unlikely to get an upgrade to or option for Windows 7 due to Microsoft's pricing policies, industry tipsters have said on Friday. Those using the 1.6GHz Atom N270 and 1.66GHz N280 will reportedly be kept on Windows XP as Microsoft's pricing for Windows 7 Starter Edition would push the system price too high. A Windows XP Home license is curre