Its worship time and you are looking into a program to use to put together all the visual elements you want to use. There are a couple of different programs out there for your to choose from. Some of the more popular include:
For a more complete listing and review of many of the possible softwares go here.
These programs each have different features that are unique to them, but most of them have some kind of que list function, a library function, and ability to enter new songs. Many of the programs have a trial version that can be downloaded. I highly reccomend downloading the trial before buying one. Try it with your service to check functionality and how well you can adapt to it. Try several different softwares before settling on one as the comparison will be helpful un making your decision. You might also look into what other users are saying on forums about the various worship softwares.