I have a couple of questions regarding Macs and webcams: 1. I need a webcam for my powerbook, but I don't want to spend the money for an iSight, what alternatives do I have? 2. I want to be able to use this webcam with my girlfriend who has a pc. Will there be problems with having a pc webcam connecting to a mac webcam? What kind of software do we need to make this work? Thanks!