It's nothing you can do in Vegas. There are software packages out there that produce DCP packages, but they are very expensive. If this is just on once-in-a-while or one-off DCP project for you, better to let a service bureau do it.
What you can do in Vegas Pro is render your project to a DPX image sequence and sound to uncompressed wave (24 bit, 48 or 96 kHz, each channel to a separate file). Then you could use e.g. OpenDCP to do the DCP conversion and packaging. It's a free-of-cost-solution and it works fine.
Yeah, found that Open DPC , but am just staring at the interface wondering what to do.
Sort of like when the car acts up and I open the hood and just look.
Thanks for the clue Marco.
Encoding will be a tall order for one as technically challenged as I!
Here goes nothing.