Try this, provided by a fellow student in F'09:
After installing subclipse and creating the repository, connecting to
the repository is a pain because of a default setting in eclipse. If
any other students are having the issue "Cannot create tunnel..." when
trying to connect to repository using
"svn+ssh://<name>@moons.cs.unm.edu/nfs/student/<n>/<name>/<repos>"
they should try this inside eclipse:
Window-->Preferences-->Team-->(Click)SVN
Uncheck - JavaHL: Commit across multiple projects
Change SVN interface --> SVNKit(Pure Java) ....
Apply and OK.
This fixed our problems w/ SVN.