Bianca,
I know you don`t need a flippant response right now...you really want answers but I can`t get rid of this stupid image of a little white sign poked into the ground or stapled to a utility pole at a busy intersection that shouts..
Incorporate Now!...Ask me How!
Seriously people say word of mouth but that is for people that have people to give word of mouth and if you are willing to wait that long, that`s fine. Others need to advertise. Even with a small budget you can get some kind of response. I`m not qualified to tell you exactly what would work best for you but I know there is a way. I`m sure you`ll find the answer you`re really looking for and not some smart%$^ comment such as the one above........although there`s really no saying that such tactics don`t work whatsoever......is there? 
Thanks everyone. I got great pieces of advice from everyone.
I think if I have culminate all three ideas I`ll really get somewhere. Maybe soon I will be able to find all the people.