Check spelling of different languages
The language version of Microsoft Windows determines the language used by the spelling checker in Microsoft Expression Web. For example, if you have a French version of Windows on your computer, the text is tagged as French and the spelling is checked based on that language. Otherwise, the spelling checker uses the language that you specify in Expression Web for text, a page, and a site.
On the Tools menu, click Page Editor Options.
In the Page Editor Options dialog box, click the General tab.
Under Spelling, click Spelling Options.
In the Spelling Options dialog box, under When correcting spelling in Office programs, click Custom Dictionaries.
In the Custom Dictionaries dialog box, under Dictionary List, select the dictionary you want to set.
In the Dictionary Language box, click the arrow and select a language.