I was surprised to read that the NTSC version worked properly in 480p, bearing in mind what I read here or maybe it was on some other forum long ago about the cause of the GT III display problem.
However I've been searching back through my own previous posts here on the subject and found one almost exactly a year old. Apologies but I forgotten something - if you still have that PAL version of GTA III try it in 480p with any widescreen dash options turned off.
You should find it displays correctly now.
No explanation then was suggested for this behaviour except the video encoder issue. I've always assumed this was a factor but it now looks like that was wrong if the NTSC version is displaying correctly on the same machine in 480p and in widescreen.
BTW the post I found also mentions GTA: SA and that it can be hex edited to display in 480p. If you're still interested I can post the link (if I can find it again). This post has been edited by fallenangle: Mar 2 2012, 12:38 AM