I just wanted to add a quick post to say that Jay Hinrichs is absolutely right. If you've read his post and are still questioning whether or not those types of programs work, wait a few minutes, go back read Jay's post again, and just sit with it for a few minutes.
And a word of caution: a few year's ago we used to call deals like this sandwich leases/sales, etc. It's really a sub-to and really isn't for newbies or someone without reserves. A lot of times, the original owner/seller will still have an equitable interest in the property that you have 'transaction engineered.' And another point, if the tenant/lessee/future purchaser moves out, trashes the property, burns the house down, etc. you can be held legally liable for damages by anyone with an interest, lien, or note secured by the property. So, you could be stuck paying off your lender (if one was needed) and the original owner or any mortgage you took over, and then paying for repairs.
@Jay Hinrichs