ok, it doesnt help to be a flamer because someone wants help, a$$.
Im not really sure on the sub and amp situation, but get some infinity 4x6 for good high end definition. Pioneer HU's are pretty good for cheap, also clarion makes good HU's for cheap. a quality sub (15") and a quality amp will set you over the $500 mark though.
Personally, with a tight budget, I would go for a 12, I spent 500 on my system and it plays the metal good, it thumps with all the double bassing and it gives pretty good SPL when you put in a rap CD.
1994 Probe SE
HU: Alpine 7893
Front Stage: JL XR 6.5" CSI
Rear: Who Cares....
Speaker Amp: JBL 180.2
Sub Amp: Avionixx 500m
Sub: Elemental 12O.44 getting 500+ watts
EQ: Audio Control
80 Sq feet of deadener