This belongs in tutorials.
1. Variables. You make it add one every time an enemy is killed. Then make the precondition for the event to pass after it hits the max number. You have to use switches to finish the battles, so that they don't repeat.
2. Sendspace
Rapidshare
Filefront
You need patience. Or try to contionously zip it, or split each folder. Or don't include the RTP.