Every time my friend sends me an invite to his games and it never lets me join and it always says "connection to the host has been lost". I called xbox support and told them my problem. They told me to call my isp, so I did.... then they told my to call my router company..... they told me to call microsoft. Now i'm here asking you guys. The microsoft people say that my NAT settings should be oppened. Right now thier set to moderate. So you guys, how do i open my NAT settings? if it helps i have a Belkin router and my isp is time worner.