st: How to use estimated coefficients in subsequent calculations

["sdm1" <sdm1@york.ac.uk>]

I'm using the predict command -- predict yhat, xb -- to apply the
coefficients from estimation on one data set to another data set.  However,
I'd like to be able subtract the estimated constant term from the
prediction.  How do I refer to the estimated constant (say, b[0]) to do
this:  generate yhatwithoutcons=yhat-b[0]?

Thanks. 

Steve

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/