I Want To Work In This Bussiness Legally?

i was wondering if there is a company that i cansign up and get paid for finding distressed properties and other properties for investers. where all i have to do is get a name and a address. or phone #. where i might be able to make $500. or more. I dont have the money to invest in these homes myself yet but i would like to get comp. for finding them till i can afford to do so myself. But i want to make sure what i want to do is legal. i also would like to know what company to contact to do this kind of work. and not have them take the tip and not pay me for it.