I don't understand the word "extream".
(Seriously, though, either work on your English spelling a bit or use some sort of spell checker. Sometimes people who are not native speakers can't tell whether something is unknown vocabulary, slang, or just plain old-fashioned poor spelling).
I do wish you luck with your goal of learning to speak and comprehend Japanese well enough in six months to be able to make such phone calls. I don't know if Rosetta Stone is the best choice for that, though. Don't they market that under the pretext that you just naturally absorb it like a baby learns its native language and give the impression that no effort is involved? The radio commercials I have heard from them are like that. Yet it seems to me a common point in the questions I have seen on the internet from people using Rosetta Stone to learn Japanese is that they are often baffled and unable to figure out just what a given lesson is driving at. The users I have seen have all certainly seemed to be stumbling around in the dark, so to speak. I suppose somewhere in the world there must be somebody who has become proficient at Japanese through use of Rosetta Stone, but I have yet to encounter anyone.