hello my friends! i have an imac 21" and i want to use him like a tv to connect my ps3 and if can a desktop pc based on windows 7.i don't want to bya a new screem because i like very much my iMac. So could you tell if i can connect my desktop pc to the iMac. Until now i connect to desktop pc with remote desktop but it is slow... i want to use Imac like a simple screen when i use my desktop. thanks for your time to read all this!!!