Burning VOB files with same file names onto DVD

[esm]

Ok guys, this is my first post here so sorry if this has been posted before but i've looked around and couldn't find a solution.

Basically I have converted individual films from xvid to dvd vob files and burnt them onto dvd fine, but now I want to make one dvd with a few of these films on them. I have deleted the movie files and simply saved the vob files for each film. Obviously as i've converted each dvd seperately the files are renamed the same as the last film. How do I make it so when the dvd runs it will run movie 1 first, and then movie 2? Is it a case of simply renaming movie 2 files?
Also I use gui for dvdauthor to make menus for the films, and each film has already had a menu made for it. So basically when burning the dvd there will be 2 menu files on the disk, how would I make a new menu file which will have options for playing both movie 1 and movie 2?

Appreciate any help, thanks Jim.

[Baldrick]

you can't just rename the files. if you have the complete dvd folder with ifo,vobs you can use https://forum.videohelp.com/viewtopic.php?t=284279 to join several dvds to one.

[esm]

Thx I shall I try that