Internet browser work in multiple Languages-
Firefox is language specific, so you need to install seperate copies for each langauge.
Though not easy to access, Googles Chrome also allows you to change the language settings
however Chrome only supports 16 versions of Spanish, whereas internet Explorer supports 19, clearly making it a more global tool.

Internet Explorer can work in German, Spanish or any of 200+ others culture-language settings, see Steps 1-3 .
Internet Options settings
Step 1 Select tools from the menu, then select
Internet Options fom the list that appers
Your Browser is a multilingual tool
Step 2.) Select
Languages at the botton of the image shown here. Most browsers support over 100 languages
Whats your preference?
Step 3.When you click on
Language Preference you can then Add a new Language or just change the order so that the Language you want is at the Top of the List.
Click here to see the final image showing where you select the language you want your browser to work in