R help - Jan 2009 - Box Cox parameter for time series

Hello R-experts,
  I want to ask I anyone knows a way to obtain a suitable value for the
parameter of the box-cox transformation for time series (aiming to an Arima
fit). Adittionally, I need to implement this to a list with a lot of series
(about 5300), so if the method is suitable for an FOR-rutine will be
excellent

thanks

	[[alternative HTML version deleted]]