I'm in the same boat but unfortunately I can only address what I have and use. I have a PB 15", and use the iSight and iChat. I love it. One the Windows side, my other PC's use Logitech 4000's. The only way I have found them to connect is if the Windows clients are using AOL IM 5.5 which, unfortunately is the WORST AV chat program around. The Logitech's image looks a little grainy on the mac (much better PC to PC). On the PC side, AOL's IM will not let you size the image, etc. which is not a problem for you (or me), but a real negative for the PC "buddies" that you are connecting to. I don't really know which part of the >PC >Logitech >AOL >iChat >mac is the weak link, as I said, the Logitechs going PC to PC, especially using MSN look pretty good. Most of my PC friends who use basic IM use AOL. Most of my geek and AV friends use MSN. Too bad there's not an iChat for the rest of the world!