Changing your username and Access Number in OS X Step 1) Click on System Preferences, followed by your Network Icon to bring up your PPP settings. Verify that under “Show” Internal Modem is selected and click on the PPP tab. Step 2 ) Under “Username” add @urec.net to your existing username and change your “Telephone Number” to reflect the following. UREC.net Access Number: 553-0047 Step 3) Click on Apply Now and sign on to the internet as you normally would.