if there is a specialized compressor for less than $100 some one please tell me, bu since i havent seen one, what components would i need to make my own, do i need a tank for the compressor or can i just use the compressor alone. And how many psi do i need to power an airbrush???

Try these:

http://armorama.com/forums/993&page=1

and here:

http://armorama.com/forums/883&page=1

http://www.walmart.com/catalog/product.gsp?cat=51199&dept=5428&product_id=4021&path=0%3A5428%3A51199%3A4093%3A3915%3A4338

Hey thanks, i have been looking around for a while and would like to get one really bad but im only 16 and dont have the money. can i just buy componets and assemyble them together?

Like M1 suggested, read the prior postings on this subject.

Just be sure to get yourself a moisture trap and a regulator. Compressors with a tank is usually the best way to go.
Most ABing is done between 12 and 20+ psi., depending on paint being sprayed and what your spraying on.