Redmine

hi,

that's my first post and i got a newbie question that affects the installation.

so far redmine is up and running on my debain server. i just get an error once i try to access a repository within a project.
production.log says:

MissingSourceFile (no such file to load -- SVG/Graph/Bar)

in doc/INSTALL i noticed a line that says:

* SVN binaries >= 1.3 (needed for repository browsing, must be available in PATH)

and i think it's related to my issue.
hence my newbie question is: 'how can i set the PATH'?

hope anyone can help me out.

cheers
joerg