I'm trying find out how to get the commands so I can use the fly mode in 1.0
Thx in advance
You can try using Single Player Commands. But the "/fly" command is a bit weird. Spacebar is fly up and Left Shift is fly down. But you can use "/noclip" which allows you to fly through objects. But my number 1 fly mod is "Zombe Fly Mod"
If you use bukkit you can make a plugin that does this, setAllowFlight() so something like
Player p = (Player) sender;