need help for TD

[silnce]

how i can spawn some creep .
how i can give order to some unit to attack the base .
how i can let some creep attack tower ( anti tower ) .

[Oloko]

There is already a tower defense here that you can look at to get the basic idea on how to do it: http://forums.heroesofnewerth.com/showthread.php?t=76241