Nat. Thanks for your detailed response.
I think I am doing everything correctly, but for whatever reason, when I drag my unedited video from the bin to the timeline, both the clip preview and the sequence preview are the identical length..about 45 seconds. I thought I may have corrupted the original video, so checked, but it is the full 1 1/2 hour long.
As I said, I simply want to shorten the original video. This seems like a no brainer, but I just cannot get the sequence preview to show the full video.
Why?
I have closed the complete program, and started from scratch, but same result.