To be honest, I haven't ever used it for chat, only as an IM client (because of history and 'deliver when online' feature). File transfer has never worked with any NAT, so we email files. It's really annoying, because AIM works great for file transfer but ICQ and WM don't. -----Original Message----- I was curious if you can chat with ICQ from an internal client behind the Firewall with someone on the outside? I have been trying to configure ISA, and ICQ to do this, but I am unable to chat or file transfer.