Like Whoa

i'm new to all this wiring stuff and custom installation and everything but i was wondering how hard it would be to install something like this in my car
http://cgi.ebay.com/ws/eBayISAPI.dll...738631678&rd=1
i was planning on hooking htis monitor up just for my PS2 and other game systems. wut do you guys think? if i bought it to a custom shop how much do you think they'll charge me? or do you think a place like bestbuy would do it?
i just want them to hook it up to my cigg lighter w/o any wires showing and not actually using the cigg lighter. i also have my skifi2 hooked up to my cigg lighter without using the adapter. my friend hooked the 2 wires together or something. i'm sry if i sound real stupid but any advice would definitly help me out.

Noguni

best way is to hardwire it into cig lighter. So it powers when you turn your car on. More info on www.mp3car.com Plus that screen looks cheap. Get lilliput or xenarc.