[R] maps library for R?

[Angel -]

Hi there,
Does it already exist a library in R to draw maps (something like a Generic 
Mapping Toolbox, http://gmt.soest.hawaii.edu/ port).

I've seen in an old R-help that Ross Ihaka once tried to port the S-plus map 
library (http://maths.newcastle.edu.au/~rking/R/help/99b/0832.html ).
Anybody know if this package is available somewhere or if there is somebody 
developing a Mapping package for R. I'll might then try to help.
Cheers,
Angel