[GRASS-user] First time trying to install add on g.extension (r.stream.order)

Hi,

I am fairly new to GRASS and have what many of you would consider a trivial or newb problem. Regardless any help would be appreciated.

Using GRASS 6.4.0 on windows vista I type “g.extension extension=r.stream.order” in the command line at the bottom of the layer manager window. The following error is returned:

“Error: svn client required. Please install Subversion first.”

I have looked through many posts and help files to no avail, if anyone can tell me what additional steps/programs/plugins are required to install addons I would really appreciate the help.

Thanks