If I may add my humble opinion, AVSIM is too much bother. I'm just an average bloke with a computer, and I can't download from AVSIM at all, due to firewalling issues that I'm not happy to mess around with. I've followed their help instructions about IE, tried using Opera, fiddled about with cookie settings and FTP protocols etc etc, and all to no avail. I'm sure the AVSIM administrators are a great bunch of people who work hard and all, but I simply gave it up in the end. So for the sake of Orbiter frenzied computer maroons like me, please post your addons elsewhere too so we can download them too.