[R] Question about plotting data points in box plots

[George Chen]

Hello,

I am plotting my data as side by side box plots.
Could somebody tell me how I can plot the points from which the box plots are derived inside the box plots? 
I imagine some use of the plot(x,y) function with x = the data and y = location of box plot, but how do I distribute the points about the vertical rather than have them show up all on one vertical axis?

Thanks in advance,

George Chen