I connect to a Windows server with my Powerbook wirelessly over the network. Now when I update a folder on the Windows server (like add a new file), the Powerbook doesn't see it. I always have to disconnect from the server and reconnect. It's kind of annoying. How can I just refresh the window in Finder? In Windows, the equivalent would be to hit F5 or click the Refresh button. I'm on OS X 10.3.9 btw.