Hi David, This link looks like it points to the resources you need: http://www.unidata.ucar.edu/software/netcdf/docs/faq.html#windows_netcdf4 Perry -- View this message in context: http://r.789695.n4.nabble.com/ncdf4-for-Windows-R-2-12-0-tp3047807p3048935.html Sent from the R help mailing list archive at Nabble.com.