I have 2 20 in. apply cinema displays on their way to me. I have searched the forums and yet I don't know if i will be able to use the dual display option with my powerbook. If i close my powerbook, can i use the two 20 in. displays as the two monitors? has anyone else done this? Also, I am aware that I need two adapters for this, but the powerbook only has only one port. Any ideas on what i can use for the other dvi to adc adapter? Thanks in advance for the input.