Combining a downloaded movie

[krazeyeyez]

First just to clarify this is in regards to a LEGALLY paid for and downloaded/distributed, divx movie/clips.

I have a few flicks that were broken into two or sometimes more parts. Its technically the same movie, but sold by the scene. I would like to combine the seperate divx files into one ISO so i can burn it to one disc as a continuous movie, and i don't mind minor overlap. I have been using a program called dvdflick which i thought would do it for me but i can't seem to figure it out.

If anyone can tell me how the hell to do this i would greatly appreciate it. And i am looking for a freeware option.