From that toot...
title= [glow=yellow,2,300]Boeing 737-800 Virgin Blue Winglets[/glow]
I have highlighted the aircraft name.
This must match exactly what you put in the aircraft.txt for the plane to show up in the sim on that flight plan. And these must be unique, you cannot have 2 [fltsim.nn] entries with the same title= line anywhere in the sim.
Hope this helps,.
Don't argue with idiots, they drag you down to their level and beat you with experience.