Hi all. I have a question about file sharing between my 2 computers. When I turn on the Powerbook, it recognizes my iMac and there is an "iMac HD" icon right there on my desktop. However, the iMac doesn't seem to find the Powerbook. Is this because the Powerbook ip address keeps changing? What should I do to make the iMac look for and recognize the other computer? Thanks in advance!