SLAC website problems

I almost always have trouble accessing the SLAC internal websites that require passwords. I don't have much trouble with purchasing, but I can't figure out how to log on to any site that starts www-internal.slac.stanford.edu (useful for some travel docs). I think Corrina said that, since they re-vamped the computer system a few months ago, users from Stanford campus need to connect to these sites through a special webpage. Does anyone know anything about this?