A SVN link refers to a SVN server ; you can install a SVN server but it's kinda fat if you got only one computer to work on. Services such as Assembla or xp-dev allow you to host projects for free.
You can add a project without SVN, just use Import/Export or even a drag and drop if structure is correct.
SVN is only to keep a system of releases. That's far preferable to use one, because it keeps all things you edited. That's not needed.
Basically, you import your project (drag and drop/import) on eclipse, then link your project to a SVN. If project was from a externalsource, you add svn of that project, checkout (= download) and then can begin to play with the local copy.