I still very new using Subversion.
Is it possible to have a working copy on a network available share (c:\\svn\\projects\\website) that everyone (in this case 3 of use)
You need to use svnserve (light-weight SVN server that comes with SVN) or apache mod.
With it, you can configure permissions like this:
[general]
password-db = userfile
realm = example realm
# anonymous users can only read the repository
anon-access = read
# authenticated users can both read and write
auth-access = write