And here I thought I was done! After successfully transferring the contents of five tapes to DVD discs -- two to Kodal DLs; the other three to Imation single layer, each time having checked to be sure 720x480 showed in the Computer Advanced settings, I suddenly had one, going to a single-layer disc, revert to the PAL 720x576 setting. Put in a fresh disc, reverified settings showed 720x480, burned: 720x576! Checked to see what was considered "Default" -- PAL! Un- and reinstalled software, being sure to select "English." Default still comes up PAL. Looked in Registry -- saw a couple of tempting data, but nothing I was certain of being the right thing.
I've sent an e-mail to Roxio support, but I'm not holding my breath!
Any more thoughts?