While I'm always in search of freeware add-ons for FSX, I ran across this nice Boeing 777 link presented by Cessna154 on YouTube.
There is a series of twelve other aircraft, all freeware, which he reviews along with the Boeing 777 with a very nice video of each aircraft. He also provides a link to FlightSim.com in the sidebar, so you can download these aircraft and try them out for yourself. Most are for FSX, but he does review FS9 models as well.
For those of you who are as frugal as I am, check it out.
Have Fun!