I have a gateway computer with a tsst ts-h552d dvd burner. I can burn memorex 16x dvd-r, but it will not let me burn the memorex printable dvd-r. I used dvdinfopro and found out the printable media was CMC MAG. AM3 and the non printable media (both labeled memorex 16x dvd-r) was RITEKF1. Can my burner support the cmc discs, or did I just buy a bunch of coasters? I tried to look for a firmware update, and found no luck. I tried using dvd shrink, nero 6.6, and alcohol 120% with no luck. Thanks again for any insight!