There are many softwares to do that. It's pretty simple. Just capture mutiple tapes into your PC with scene split, which results in multiple files. Then add each file into editing/DVD burning programs like Ulead VideoStudio to make a DVD.
Abry
Does anyone know how one can capture different video clips (from multiple mini Dv's), put them together and then burn DVD? I need to know which software will allow me to do this. I can capture a single mini Dv into my computer and then edit scenes as I want but how to do this with multiple tapes and put them together to burn DVD? Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic