MY hobby is virtual aviation and to enjoy this I run two superfast computers running Windows XP, Zone Alarm firewall through a local network. On one computer is my FS programme. THe other runs the addons like ServInfo, SBR, Advanced Voice Client WideSF SquawkBox. These programms allow the interconnection over the internet with other pilots etc. WIthin 10 minutes of starting a flight, FS9 crashes with the message pointing straight to imon.dll. I have the latest NODs2 software running. No other message appears other than this one. If I run any of the other programmes independently there is no problem, but collectively, I have this problem in Flight Simulator. I have so far exhausted my search for a solution and hope that through this forum I may find one. Thanks Gregg.