Getting started with quantmod
I got quantmod installed on R at work and home couple of months ago. Here are the instructions for installing them from the R command line.
install.packages(c('xts','Defaults','quantmod'))
Check out the Quantmod homepage for further information.
To quickly whip up an example to check your installation is alright, use this script:
# chart AAPL ticker
library(quantmod)
getSymbols("AAPL")
chartSeries(AAPL)