DVD aspect ratios at 720x480

[Mikele]

Is anybody using PowerDVD with a resolution of 720x480? It doesn't seem to display aspect ratio correctly, as 720x480 is not a 4:3 nor a 16:9 resolution. So, 4:3 DVDs look too thin, and 16:9 look too tall. As 720x480 is recommended for TV out, I thought that maybe someone has already figured out how to display the correct aspect ratios at this resolution (without using a player like Zoom Player and set aspect ratio values manually).

[prr]

720x480 is a NTSC resolution, all NTSC DVDs are in that size. DVD players should modify the aspect ratio to get the correct image.
PowerDVD should do it automatically if Your gfx card can handle it.

[Mikele]

I'm using PowerDVD 4 and it doesn't, that's why I asked.