1. Go to the Apple icon in the upper left corner and go down to Control Panels. In the list of control panels, select TCP/IP. A window like the one below should appear.
2. Click on the triangle pointing down in the "Connect via" window.
If you do use America Online, you can contact them. Reportedly, they might have a new version of the extension which doesn't conflict.
If you don't use America Online, you can remove the file by doing the following:
3. There should be an option in the list for either "PPP" (if you are using Open Transport), "FreePPP" (if you're using FreePPP), or "MacPPP" (if you're using ConfigPPP).
4. For the Configure box, click on the triangle pointing down and select "Using PPP Server".
5. Once the Configure box has been set; the IP address, Subnet mask, and Router address should become unavailable saying either "supplied by server" or "not available".
6. In the "Name server addr." box type in 169.197.1.3 on one line and 169.197.1.4 on another.
7. In the "Search domains" box type in azstarnet.com
8. Close the TCP/IP window.
9. If you made any changes, you'll need to restart the Mac before they take effect.