How do you hook up a panasonia HD TV to a DVR and then to a DVD/VCR

Depends on how you want. You need to see what inputs and outputs are available on each device, then match them between devices. For example, you might want to use HDMI between the DVR and TV, but have Component video between the DVR and the DVD/VCR then the same between the DVD/VCR to the TV.