Only 1 prog asked about finalizing, and i did that.
yes to NTSC
I have both the + & - DVD blanks but so far only tried the DVD-R
Is your burner capable of burning playable DVDs or just Data DVDs?
both I think

NEC DVD_RW ND 3550A

just finished a moviemaker project - I'll try to burn it in the morning on both kinds of DVDs and let you know how it goes.