Dear foreign customers,as we are in different countries,speak different languages,so when using the quantum analyzer,sometimes it'll meet some language problems,if you buy our English quantum analyzer,you need to operate the quantum magnetic analyzer in the English language version,then you need to change the computer operation language version and then the analyzer can work well.But now don't worry about that,as long as you use the Win7,you just need to download the Language pack,then all the things has been solved,as win7 can be compatible with more than 92kinds language.If you want to know more,pls do let us know,thanks!