Ok, I am trying to enable screen Sharing between my tow Macs. my iMac and my Macbook. i see the "share Screen" button when i click on my imac/macbook in finder on the left side corner. I am asked for a password and a username... what username and password is it asking for? i typed in my macbook's login name and password, imac's login and password, and my e-mail and password (bassically the username for my internet provider) i need help, i googled this but i can't find the answer to my question. i Youtubed this but all i got was a lot of info on what screensharing is, i know what it is, i want to be able to use it.... -Thanks!