Many thanks for your reply.
Unfortunately it did not help me.
The link you give me is the one which I was already using.
They give 3 methods for the installation.
I installed (or tried to install) Fuse4X and sshfs using the first method which they give, i.e. from the link
http://fuse4x.github.com(as I mentioned in my first post).
Following your advice I tried the second method which is to use homebrew, but I failed to install homebrew.
I
also tried the third method, namely by copying their command lines to
my terminal, but I got an error (wget: command not found).
Thank you again, and I hope that I am not a hopeless case!
Sincerely,
Felix Werner