I have seen the Vicks Vaporub solution in the paper. It does take months to get rid of, because the entire nail has to grow out, but a doctor that writes in our local paper swears by it, as does his write-in patients.
My doctor said to soak my feet in a bleach solution. About 1 capful per gallon of warm water (as warm as you can without burning yourself ). I did it a few times a week or you can do it daily. It takes a while because the nail has to grow out, but it worked.