Help me find an amp please

Ok I just bought a new deck, The Dual XDVD 8181 (http://www.dualav.com/indashvideo/xdvd8181.html). And I currently have 4 6x8 4 way pioneer speakers (http://www.bestbuy.com/site/olspage.jsp?skuId=7675946&type=product&id=1134702498924) And have an 8inch amplified bazooka tube. But that doesn't really matter here. Now I know the deck is putting out 200w, 50wx4 max power. Cause thats what it says. I'm not very good with this RMS stuff or watts and voltage or ohms. Confusing to me. :screwy: And I know the people at a department store just want me to buy a top end amp with more than I need. Someone please tell me what kind of power I need in an amp. I know it needs to be 4 channels. Thats what I know. Please let me know. Thanks.

whats your budget?

Probably around $200. But I'd probably just find one on ebay to get a better deal. In fact I already own a pioneer GM-X352 it says its 80w+80w. (http://www.pioneerelectronics.com/pna/product/detail/0,,2076_4055_34316_tab=B,00.html?compName=PNA_Prod uctDetailComponent). I've had it for about 5 years from my old system in my old truck. Maybe I could just buy another small amp like this to run to the two other speakers. But again I have no clue if I can have three amps going to the deck. You know one for each set of speakers and one for the bazooka tube.