1. Is it possible to create a money system ???
2. How can I make a ship fly around and then land on the ground?
3. Is it possible to make an npc dance?
4. How do I make an npc say something like say hi what's your name ??? please help me !!!!

1. yes but you would have to use the MP source code
2. you would have to use the icarus move commands to make a ship move but it will look pretty scrappy unless you use roff animations which only work for SP afaik
3. use icarus to make npc use certain animations
4. use icarus

there is an icarus manual in the MP 1.01 SDK