ncdf4 for Windows/R-2.12.0

This is what CRAN says about ncdf4:

Windows binary:	not available, see ReadMe

Sorry. Then in answer to your second question:

http://cran.r-project.org/doc/manuals/R-admin.html

Especially:
http://cran.r-project.org/doc/manuals/R-admin.html#The-Windows-toolset

(At least as I read the traffic on rhelp. Never built from source on  
Windows.)

David Winsemius, MD
West Hartford, CT