Hey K9 - where ya at in Texas.
To really over simplify things to get started all you really need is your mechanical, biologica, and chemical filtration. In a reef tank your live rock/live sand can provide bio and chem filtration. For mechanical filtration you need a protein skimmer.
So at the very least to get started you need:
1. Live Rock
2. Live Sand
3. A protien Skimmer
4. Lighting
5. Powerheads or pumps to provide current
Now depending on how you want that equipment situated can be complicated. Hang on the back, inside the display, underneath the display, above the display???
Your ligting options for a reef tank are either:
Metal Halides
Very High Output Floresents (VHO)
Power Compact Florescents
I think PC are the most economical, but you can shop around. Metal Halides are going to cost some serious cash but if your serious about the hobby it may be the way to go.