Problems with Network Scripting

Well, I am having bad luck with some networking stuff. Here is my situation, if anyone can help.

  1. I want to be able to send a command to apps on other comupters in my house. In system preferences, all I have selected is Remote Apple Events. I have no password set for anything.
  2. When I run this script,
tell application "iTunes" of machine "eppc://xxxxxx"
         set nameOfSong to (get name of current track)
      end tell

I get a request for a password. This seems weird because of two reasons. First, I did not set a password. Second, the name of the computer is “central” and it ask for a password no matter what name I give it. It is like it is asking me this just because it sees “eppc://” in the script. Here is what I need help with.

  1. Can someone walk me through the setup I need in system preferences to do this scripting?
  2. Any ideas why it prompts for the password…especially if I do not have one set. I was running this script 2 days ago and it worked without passwords or anything. It seems like I should be able to send this command without a password.
  3. How do I find the IP of my computer on the network?