First off
Now do not hasitate to ask questions. That's what we all are here for. I personally don't consider myself an expert, nor have I been an avid reef keeper for ages. But between everyone here I'm sure we all can help you get this tank going. It is a real satisfaction in getting one going and actually thriving.
About the live rock. You can DIY like Frag has mentioned. About.com has an awesome article on it with mixing portions and everything. Let me know if you need the link. Like Frag also asked... What do you plan on keeping in the tank because you might have the opportunity to keep the tank with out the sand in the display.
Give us an idea as to what is your goal with your tank and we might be able to better guide you to reach it.
Again WELCOME.
Hybrid Mode
