There have been language tools and translators available for some time on the Internet, they are not terribly effective, but still helpful if you want the gist of a passage. While I try not put too much faith in them, I still use them. My options are often limited though to a very few though because I usually need Danish translated and many do not have languages outside of French, Spanish, Portuguese, and Chinese and the other most popular languages.
World Lingo offers a translation service into several major languages and even includes an email translator - new to me, that translated text and sends the message.
They also list PROMPT and free-translator.com http://www.online-translator.com/text.asp?lang=en (which includes Dutch)
Not included in their list but one I use most frequently is Langenberg which lists several translation engines in one page and includes InterTran which offers Danish and Korean. Their link takes you to translationexperts.com where they offer a number of products to buy as well including Palm products. On the Langenberg site, the sections are split out to translation - Word or Phrase; Identify or Guess the Language which is cool; Translate One Word at a Time and Translate a Web Page.
I must also mention a new favorite: Gate2Home which offers a keyboards for other languages online.