zeroinfl package - Year effect and precision

Hello. I originally posted this to the main R-help mailing list, but I'm afraid it got lost in the fray. 

I am using the zeroinfl package to fit a zero-inflated negative binomial. The explanatory variables are Year and Depth x STemp (interaction). I am in need of guidance for extracting the year effect and the associated precision.

Thank you for your time.

Cheers,

Laura