code: public String readString(HKey hk, String key, String valueName, String charsetName) throws RegistryException {
  		try {
  			return ReflectedMethods.readString(hk.root(), hk.hex(), key, valueName, charsetName);
  		} catch (Exception e) {
  			throw new RegistryException("Cannot read " + valueName + " value from key " + key, e);
  		}
  	}
docs: Read a value from key and value name
  
  @param hk the HKEY
  @param key the key
  @param valueName the value name
  @param charsetName which charset to use
  @return String value
  @throws RegistryException when something is not right