The current release version of IE View (0.86) contains translations into Russian, Polish, Traditional Chinese, French, Spanish, German and Italian.

Those languages are only available when running Firefox, however – hadn’t updated the old-style installation scripts for Mozilla to take the new locales into account.

There’s a test build, with an associated Bugzilla entry, which adds Catalan (ca-AD) as well as Mozilla support. See the details here, and please let me know how it works out for you.