Hi and thanks argv0, I am running 6.21 but that's the version that came with my script. I'm not on Vista - I'm on Windows 7 (if that makes any difference). But even so, it doesn't explain how all the other people out there with the same script, v6.21 and Vista/W7 aren't having any problems at all (well according to the Ops anyway). And the IP Address not filling has been a problem since I was on XP. The no-respond to DCC requests is new on my W7 computer. I don't have a relatively new router (D-Link DI-524).