Kind of weird, but when I talked to an Apple sales person at Apple on the phone today, he told me that there would be a iChat version for PC. He said he had just heard about it today and that it should be downloadable already. I looked for it but I can't seem to find any reference that it is or would be. So either he was totally confused and meant aim 5.5 or it's coming out in a couple of days. Just wanted to let you know.