Hi, welcome to the forum.
Checkout this link. It will give you some clues as to where to start.
http://www.reefcentral.com/modules.php?s=&name=Content&pa=showpage&pid=1
And then look at how I setup my tank.
http://www.fnzas.org.nz/fishroom/1-vt9619.html?postdays=0&postorder=asc&start=0
You will be looking at Minimum $1800.00 just for the equipment alone, but you can start purchasing the stuff a bit at a time.
Do a lot of research on this site and on http://www.reefcentral.com
Good luck and don't be discouraged. Make sure you get it right THE FIRST TIME. It will save you money, time and heartache in the long run.
My tank has been running for 14 months and loving it. Well worth the effort.