I wish I had time to refine my French. I think it's a beautiful language and I often times find that the actual speech makes it easier for me to express myself and I tend to not mumble in French as I usually do in English. I sometimes think that I mumble in English because it's too easy, that I'm too close. Having to actively think about the language slows me down and makes expression more clear. If I had hundreds of dollars just to blow on a whim I'd likely try the French Rosetta Stone program.
check the local library. The lansing library here has several rosetta stone courses.