What upgrade paths does Windows XP support

A. XP Home Edition and XP Professional are available in full and
upgrade versions. If you're upgrading from a qualifying OS, you can
purchase the less-expensive upgrade version; otherwise, you need to
purchase the full version. However, even if you purchase the full
version, XP doesn't support all upgrade paths. Review the following
table to determine whether XP supports your upgrade path:




Current Version Win XP Home Win XP Pro


Win 3.1/3.11 No No


Windows 95 No No


Windows 98/98SE Yes Yes


Windows ME Yes Yes


Windows NT 3.51 No No


Windows NT 4.0 No Yes


Windows 2000 Pro No Yes


Windows XP Home N/A Yes


Windows XP Pro No N/A