How to burn a DVD when I only have VOB files and not much else?

My recommendation would be to use ImgBurn:

Basically you just need to select the VIDEO_TS folder and it'll help you select the right file system etc. with helpful prompts along the way:

If you need detailed guides:

• How to write DVD Video files directly to single layer media using ImgBurn

• How to write DVD Video files directly to double layer media using ImgBurn

If you have a Ubuntu/Debian/Linux/etc machine, you can use the solution suggested here to make an ISO file and then burn that to your DVD.

If you have only Windows, you may try converting the VOB files into a format usable by Windows Movie Maker, and then using WMM to create the DVD.