Rosetta Stone helpful but
Definitely helpful, but should not be the only tool you use to learn the language.
The Rosetta Stone product was exceptionally helpful in learning new vocabulary and some basic words - much more helpful than any textbooks, tapes or computer programs I have ever used.
It was also helpful in terms of learning pronunciation.
However, I found that it was not very helpful in terms of learning how to put words together and form MY OWN sentences. I think it would have been wonderful if it had a couple of extra lessons in each section which had you put together your own sentences as opposed to identifying the pictures associated with the sentences the Rosetta Stone put together.
All in all though, it's a great tool. Just not as great as it is advertised.