Found this in the EI help files it may help.
Some websites offer their content in several languages. To specify which language you prefer to view webpages in, follow these steps.
In Internet Explorer, on the Tools menu, click Internet Options.
Click the General tab, and click Languages.
Select the language you want to add, and then click OK.
Repeat steps 3 and 4 to add all of the languages you would like.
Organize the languages by order of preference. If a website offers multiple languages, content will appear in the language that is highest on the list.