No. When you buy a copy of win2k, you will also be buying the license to use the software. If you already have a copy [and it is not installed on any other machine] then you can use that.Erm said:This isn't really a problem, just a query. We bought a machine at work that came with XP professional installed. We want to change it to a 2000 professional machine. Does the XP license cover us to do this?