Also... (I forgot this in my previous post
I would suggest getting at least 18, if not a full two dozen. Tender preemie skin is much more susceptable to rashes and irritation, so you'll need to change change change that baby, and you don't want to be doing laundry every day.
Natural fibers, such as cotton and hemp (though I have heard that hemp can be slightly allergenic to some), are great because you can boil to disinfect them; no messing with bleach and worrying if you've completely rinsed it all out.
I like wool covers because they allow the babe's bum to breath, yet still contain the wet. You don't need very many (which is good, because they can be pricey); 3 or 4 at the most. When a cover feels damp, you get a new one and let it dry; otherwise just keep reusing the same cover.
Also, I don't know if you know this or not already, but zinc oxide wrecks cloth diapers. Unfortunately, zinc oxide is present in most diaper ointments. The good thing is that Northern Essence (http://www.northernessence.com
) makes a fabulous diaper salve (including one specifically for when you are dealing with yeast), as well as great wool washes and lanolin (you'll need to lanolize the wool should you choose to go that route) so you can combine your order into one. My son was not only premature, but to this day continues to have issues with sensitive skin. He has never ever had any problems with any of the NE products (I love them
I hope this helps, and that you little one thrives!