you might try adding a seperate activity -- seperate TV -- just for HD. So.. you would have two TV icons under watch and you will just have to know which one is for HDTV and which is for non-HDTV.
Universal Remote: Sony AV-RM3100, TV - Samsung TXJ2766, AMP - Sony STR-DE845, DVD - Sony DVP-3000, Tape - Sony TC-WE435, VCR - Panasonic PV-8661