Copying multiple VTS/VOB files to one disc

I have several episodes to copy to disc, however, they are all named the same in VTS or Video format and nero will only allow one episode at a time to be copied. Ultimately this is causing a great wastage of disc space. I have tried renaming the VTS/Video files a, b, c, etc however, nero does not recognise them if you do this. Can someone tell me how I can get multiple files onto disc if they all are named the same? Can they be renamed?

It’s not really clear what you are trying to do; is it to reauthor a DVD-Video standard disc with all these episodes on, or just saving the individual episodes as bare MPEG2 files on the same disc?