Long Story: My iMac was replaced with a new one. I tried to migrate my old data and it created a second user. The second user is also me and it seems like a mess right now. I have Lion on a USB stick. I want to wipe everything, reinstall Lion from the USB and use the Setup Assistant when you first get the computer to restore my time machine backup. Apparently doing a Migration Assistant was what created that second user. So, I found that hitting Command + R while booting up takes me to the restore screen. If I click "Install Lion" it seems it wants to redownload lion and install. But I already have it on a USB. What should I select so I can install Lion from the USB I have. As you can tell, I'm very new to Mac. I apologize if these are basic questions. Thanks.