A few Toast questions

I'm new at Toast -- I've used Roxio software for Windows before, but I'm not quite sure how to go about a few things with Toast.

First, how can I tell if a video (.avi) is in PAL or NTSC format? Toast gives me a warning that one or more of my .avi files are in PAL format and might not play on some DVD players. How can I tell which one it is so I can convert it with VisualHub?

Secondly, I'm running into a little problem -- I have an .avi that is approximately 1.5 hours long, and when I try to add it to Toast (not drag and drop, but add using the add button), it only adds about 5 seconds of the video. This happens no matter how much free space I have left on my blank DVD. Any ideas why and how to fix this?

Thanks a bunch!