SVN repository in Xcode, troubleshooting tips

So I have two works computer, one that I use mainly for development, the other Macbook is pretty slow so I rarely use it. I'm new to the whole subversion / source control thing as this is my first development job. My lead does not the answer to this either so I thought I'd try to get some help here on SO. We are trying to connect to a repository that is on one of our consultant's servers. On my main computer, I have no problem connecting to it and committing and updating files. I never have problems.So I have two works computer, one that I use ma