i'll try to describe what i'm trying to do.
I want to slowly zoom in on an empty desk. The desk does have a picture frame, with a child in a soccer uniform. As the camera zooms in, the child starts to move within the frame, as if the picture came alive.
I can do picture in picture, but I need have the smaller picture (with the child), look as if it is in the frame, which is being zoomed into.
Please take a look at my blog post PE: Perspective Effects and then let me know if any of those techniques would work for you.
Then we can talk specifics starting with version of Premiere Elements you are using and the computer operating system on which
it is running.