batch file execution

I am new to R and really like to get a handle of basics in short period of
time. What I am trying to do is get myself a list of must-do's (read in
data, batch execution, delimiters, basic modeling commands) in R as in Stata
or SAS. I am just wondering how to execute a R batch file in RGui. Suppose I
have a script file (like do file in stata, or sas file in SAS) under
c:\whatever.R, how can I execute it using commands (not drop down menu) in
RGui? In stata, would be something like

 do c:\whatever.do
 How about in R. I tried the "R CMD BATCH('h:/whatever.R'), but it didn't
work. Any help would be greatly appreciated.