Well, I finally did this install today and the codes in the RTI master 232 library worked fine. I didn't have to go into the properties and conveert to hex like mentioned above.

And Glack hooked me up with the channel commands too! Thanks alot! These commands are awsome, so fast and reliable. I used them to replace all of my favorite channels and XM scrolling list macros. I didn't think the channel commands were going to work with the H21, I thought it was only for the pro model DVR. Anyway, I am glad I tried them because it made my day.