Thanks to Kit Baum, a new package called -bitobit- is available from
the SSC Archive.
-bitobit- fits a seemingly unrelated bivariate Tobit model to two  
equations with variable censoring thresholds.
For more information, type
. ssc describe bitobit
To install the package, type
. ssc install bitobit
Peace,
Daniel
--
Daniel Lawson
Assistant Professor of Economics
Drew University
http://users.drew.edu/dlawson/
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/