I have found the definitive unpacker for win machines, is called Zipzag and can manage, extract and convert, LHA, LHZ, LZX, and all the other formats i can remember plus ADFS D64s isos themes and icons packs.
BUT this beauty is shareware!!!! it costs $20 for the full version. Wath the F%$k!!!
Anyway, go and try it, at last you get 30 days of full unpacking of any type of file.(and of course you can register and enjoy the proggy forever).
here goes the link: