如何在Emacs中使用SVN（psvn无法创建隧道）

We just installed svn at my office. TortoiseSVN works (with putty to do the ssh thing--sorry if this doesn't totally make sense, I'm a total svn newbie, I always used cvs). I found psvn for emacs, which seems to be pretty standard. When I tried running it, it said it couldn't find svn. So I downloaded the client from tigris.org--which actually redirected me to a place called CollabNet which had me register a username and password just to download the svn client--still don't know what that was all about.We just installed svn at my office. TortoiseSVN