My TV does not have the yellow/white /red plug only plug for cable how can I set up my dvd player without it

You may have to buy a converter, it has those plugs set up for you and can plug into your television easily.

my tv does not have the yellow/white /red plug only plug for cable how can i set up my dvd player without it
An RF modulator will do the trick. I serched Radio Shack's website using the keyword "modulator" and found several models.