If you're referring to the GUI language, the language is now dependent on what you have configured as the language in your browser. For example in FireFox it would be Options -> General -> Language. If you change that to Spanish, it will change the G...
So to get around it you need to use a different version of windows, or a Linux box. If you're not currently, I would also suggest trying the solarwinds free SFTP server on the 2008 box first.