I have an avid interest in Flight Simulation on the PC. I started off some years ago by trying FS98 for a short while, but then didn't touch FS until 2006 when I discovered FS2002 - wow, what a difference.
Currently I use FS9 (Microsoft Flight Sim 2004 - Century of Flight, to give it's full name), along with FSNavigator. I also now run FSX
When I discovered the joys of multiplayer ONLINE it opened up a whole new world.
I fly with SimAviators and Around The World. (I use FSHostSpy to find online FSHost servers - if you haven't tried it yet then you really must ! )
TeamSpeak is a real must for online multiplayer as it allows you to talk to the other pilots / ATC.
My flight deck.......

All new system November 2007
Intel Quad Core 2.4Ghz, 4gb ram
Two * nVidea 8800GTX
Matrox Triple Head2Go Digital
Saitek Pro Flight Yolk & Throttle - with extra Throttle Quadrant
Saitek Pro Flight Rudder Pedals
Saitek X52 Pro - HOTAS - joystick & throttle.
I built the centre console with the aim of being able to fly without having to use the mouse / keyboard.