Mixed model for spatial data

Hi all,
as of now, I have been fitting mixed models for longitudinal data (measurements repeated over time). I have spatial data (ID, response, predictors, longitude, latitude). Generally mixed model?in R?uses something like?:?? (1|Subject) in the argument.
Now, my question is how do I take care of (1|Subject) stuff?
Bivand et al. has given an example in page 288, (1|Areakey).
Any help?
Milan