Well calling them "Movie Clips" doesn"t really Help...Windows Calls all Video Files Movie Clips but there are Many different Formats... There are Programs like "Ulead DVD Movie Factory" that are designed to put Most all Formats on to DVD for you and they are Easy enough for a Beginner to learn, There are of course many other programs but it is one of the Better ones for beginners to use... Cheers
Or if you are simply looking to join them and convert to DVD with no personalizations such as chapters, menus etc. I would suggest Apollo divX to DVD. A simple utility which allows you to import your "Clips" and convert directly to DVD.