My sister is away for college and my parents misses her a lot... Since I have a MacBook Air and my sister has a iBook G4, we need to get her a webcam so that my parents can use my MBA to webcam chat with her. I looked up iSight and at the price for this. Rather then make my parents spend about $100 for this, is there any kind of webcam we can buy to send to her? Also if the webcam works perfectly fine for her iBook G4 then later on we plan to buy another webcam that will work with my mom's iMac G3. Anyone with experiences with this can recommend a good affordable alternative to iSight? Thank you in advance.