Dell Inspiron 9300 & 8100 interchangeable parts?

We have a widescreen Dell Inspiron 9300 that needs only a screen & a Dell Inspiron 8100 that isn't working (not powering at all). Will the 9300 motherboard fit into the 8100 & maybe fix it? Alternatively, can I put the screen from the 8100 on the 9300? Thanks!