1 Download the latest version of R

Go to any CRAN site (see http://cran.r-project.org/mirrors.html for a list), navigate to the bin/windows/base directory and collect the files you need. The current release is distributed as an installer rw2010.exe of about 25Mb. This contains all the components and allows as complete as installation as you choose.

2 How do I install R for Windows?

You need Windows 95/98/ME/NT4/2000/XP/2003 Server: Windows 3.11+win32s will not work. Your file system must allow long file names (as is likely except perhaps for some network-mounted systems). A full installation takes up about 50Mb of disk space and a minimal one about 15Mb.

To install use rw2010.exe. Just double-click on the icon and follow the instructions. If you installed R this way you can uninstall it from the Control Panel or Start Menu (unless you supressed making a group for R).