well lori............ya have heaps o choices before you...
if you are considering filming your services on a continual basis.......may i suggest for aproxx. a twelve hundred dollars you can purchase an editing appliance......such as the casablanca avio or the screenplay.........these formats are very easy to use and are great for quick turnaround productions like a church service........we use the avio at our church and provide a weekly service program and broadcast it on our local public access station.........as forsoftware for your existing computer you may spend from seventy dollars or so for a very basic program or you can spend up a thousand or more for a much better program to meet your needs.......check out the avio at this site
http://www.casablanca.tv.........think that might help ya......
artie