divx forum...? do you mean it's in divx form, as in the file...? use winAVI to convert the file, and then use dvdfab or dvd shrink (this is the one I use) to burn it to a dvd...
if the movie is split into 2 files (pretty common), click on the top file in winAVI and then press shift + the down arrow to highlight the second one as well, then it will combine both files to a dvd_0 folder, which will contain all the files needed to create the dvd...