RConsole

On Windows, I suppose?  Save the Rconsole file in the etc subdirectory under
where you installed R.

HTH,
Andy

From: Marcos Sanches

I changed my R console configurations, for example, the letters
are white, the background is black, etc,... Then I saved this new
configuration. What should I do if I want to have this new 
configuration
everytime I open R?

TIA

See also ?Rconsole which tells you:

"There are system copies of these files in 'R_HOME\etc?. Users can have 
personal copies of the files: these are looked for in the location given 
by the environment variable R_USER. The system files are read only if a 
corresponding personal file is not found.

If the environment variable R_USER is not set, the R system sets it to 
HOME if that is set (stripping any trailing slash), otherwise to 
{HOMEDRIVE}{HOMEPATH} if HOMEDRIVE is set otherwise to the working 
directory."

Uwe Ligges