The installation of doctrine is very easy. Just get the latest revision of Doctrine from http://doctrine.pengus.net/svn/trunk.
You need a SVN(Subversion) client for downloading Doctrine.
To check out Doctrine using the **svn** command line tool in the current directory use: <code type="bash"> svn co http://doctrine.pengus.net/svn/trunk . </code> Do check out using a GUI based tool like [http://tortoisesvn.tigris.org/ TortoiseSVN] simply use the http://doctrine.pengus.net/svn/trunk in the the path field. No username or password is neccesary.