Need help with my digital converter box and PIP

 

I'm posting here...can't find specific area for this subject-
I just spent 2 much money on a new tv w/ 2 tuners for split screen PIP, But with my cable provided Digital converter box, I can't use the PIP feature! Why not...this dosen't seem acceptable to me.
Any help would be appreciated.
Jump to: Home Audio Forum | Home Video Forum | Home Theater Forum | Car Audio Forum