So, I have the Macbook with the iSight camera built in (and iChat software of course) and I'd like to be able to video-chat (with voice even? or no?) with my parents and my wife's parents. They have PCs and it's a lost cause for them to get Macs. SO, would it work for us to use iChat and them to use Yahoo or AIM, or Skype? It is not at ALL clear to me what the proper combination is for is to have our Mac and them to have their PC and for us to see each other. How about if I use Yahoo Messenger for Mac OS, and they use Yahoo Messenger for PC? Does iSight work this way? Too many combinations!!! Anyone suffered through this trial and error already?