My soldiers in Iraq & Afghanistan are usually using their own PC notebooks & web cams that work very well with Yahoo I.M.; sometimes, depending on where their missions take them, they're using a 'public' PC & web cam if one's available. All the public Army computers have some version of Yahoo I.M. installed on them, I assume because the Army has decided that Yahoo I.M. is kind of 'universal' for everyone. None of the internet connections are broadband, unless you pay $75 to have it wired into your sleeping area, & when you work 12 hour combat shifts, you don't spend a lot of time online. It's pretty much work, sleep, eat & work again, so the broadband charge isn't worth it for them.
As I understand it, iChat is a Mac only piece of software, I'm not very familiar with it at all. We've always used Yahoo I.M. with stand alone web cams. On their end, they can get their web cam set up a lot faster than I can & they're usually 'squeezing' me in after a mission before they go to sleep & I don't want to waste time setting up my web cam, taking away from our 'talk time' & I can see them on their web cam, they just can't see me. But if the built in iSight camera could be set up so it would be ready to work with Yahoo I.M. as soon as any of them 'chime in', that would really be great. But I don't know if the iSight camera can be set-up to do what I would like it to do. Thanks.