I have a question about how do you hook up a dvd/vcr combo to my satellite box and to my TV but my TV don't have av jacks how do I hook up?

How do I hook up my dvd/vcr combo to my satellite box and my TV it has no av jacks

You should just need an RF modulator. It takes the yellow, white, red video signal and converts it to a signal that can be read by your TV's tuner (by tuning to channel 3 or 4). They're usually about $20-30 (USD).