Ilo dvd player wont search high channels

you can't the amount of channels a dvd, vcr,or tv can select is a function of the tuner, if teh tuner will only accept 125 channels Back in the late 80''s and early 90's when basic cable was expanding and the cabel ready vcr's were just coming out with the auto search tuners they were only 125 channels total if you wanted to pick up the extra channels that cable was putting up in the higher numbers ie (above channel cable channel 45 I belive it was) you had to buy a VCR or TV that had a 181 channel cable ready tuner built in it. Now with satlite and digital cable if you want to record anything higher than what your VCR, or DVD will recive you will have to use the line inputs and record that way from your cable box or through a stereo amp that will let you take the audio off and the video off and put them through teh line inputs of your burner.

I have directv so I have 300 some channels. When I do the setup it will only auto search up to 125 channels how do I get the higher channels to be autosearched so I can record on them