unzipping LHZ files

Hi All
While searching the net for aircraft for Flightsim I came across a Japanese site that had aircraft for flightsim 2002.
I downloaded a couple of files, but when I went to unzip then, the files were LZH files, which I have never heard of before. So does any one know how to unzip these types of files
While searching the net for aircraft for Flightsim I came across a Japanese site that had aircraft for flightsim 2002.
I downloaded a couple of files, but when I went to unzip then, the files were LZH files, which I have never heard of before. So does any one know how to unzip these types of files
