Welcome!
Don't be afraid to buy stuff used, either!!! I have very few items I bought new. Between ebay and the selling forum here on Reefcentral and the CVRC, you should be able to find EVERYTHING you need. My first reef setup (and is actually still up and running strong, just evolved)
55 gallon tank, stand $100 at LFS used
Skimmer $50 used (still using)
Lights 2x55w PC $110 new
Live Rock (most important) 2 purchases, one 35lbs $125 shipped from fellow RC member, one 25lbs $70 ebay
Live sand from LFS 40lbs for $40 I highly recommend Agralive, but that's just me.
4 maxijet 1200's with Natural Wave timer, won from reef club meeting (but buy those used as well)
$605 total over a couple months..
I had kept salt tanks since 1994, but never had a tank run so smoothly until I started this tank in 2001 and found my LFS and Reefcentral. Good luck! Do some seaches, read the newbie forum, visit Ron and Barry, and ask questions! Happy reefing!