How to convert Camera Video to DVD format?

I am trying to help someone take digital camera, pentax optio A10, video and burn it to a dvd for viewing. I have not been able to do this yet. The formats are different and I cant seem to create a format that a dvd will read. Do you know of a software program that is able to do this? Or can you lead me in the right direction?

Thanks for your help!

I go from a video tape to hard drive and then to DVD and I use a program called ULEAD. It's pretty easy to use as well. But I am a novice when it comes to burning DVDs.