I use Vendio, which used to be Auction Watch. It is a great program. If you spend a little time with it, the software does a ton of things for you. It is not that expensive, either. You would not need anything like this if you are only going to do 20 -50 auctions and be done with it. Only get it if you plan on continually selling, even if in small amounts.
http://www.vendio.com/

Make an effort to take the best pics you can. It makes a difference at the end of the day...