Sound System!~! ^^

i have 02 accord ex-v6 coup

i wanna get full sound system, mean 2 - 10" speakers, amps, sealed box....

how much is it gonna cost approximately(only 3 things as above)?

how do i decide which amp i should get ??? what should i look at on speakers??

OOH.. by the way,,, not the woofer, but 3 way speaker can improve the sound?????where is it gonna located???

What is the original watt of 02 accord ex-v6 coup????