ageecee, I've been a RE broker for 16+- years and have watched his infomericals for many years and have formulated this opinion.
People sit home and dream about striking it rich, which I don't blame them, but they think it's easy and it will happen overnight, which it won't. Sheets has been longer than any other infomerical, so he's doing something legit(IMO).
Do I think his stuff works, absolutely, but it'll depend on what state you reside in and your willingness to work and follow his advice step by step, usually that's where the problem is.
Do you need to buy his program to buy homes w/no money down, no you don't. What you need to do is get pre-approved for a mortgage and tell the MTG officer you want to by a home w/no money down, if you qualify, then find yourself a BUYER AGENT, be up front and tell them your situation and start looking.
You can purchase V.A. Foreclosures w/no money down or in markets that are slow, the seller maybe able to assist in the financing or ypu can find an investor who will loan you the $$ just like a bank would(I do this all the time).
I don't know how much sheets program is, but if it's under 300, it might be worth checking out as long as your going to Apply WHAT YOU'VE LEARNED.
I don't know what state your from, but if your looking in MA, I'll help you out or if it's in Missouri, then Lounge Lizard might be able to help you out.
Good Luck