I want my upcoming appointments to show on my home screen. I loved this feature on my Centro and have come to depend on it. Can it be done on the Storm?
What you are looking for is a Today Theme for the Storm. Unfortunately, Plazmic 4.7 has not released yet and there are no themes out for the Storm yet other than the one it released with.
Hang tight tho, once Plazmic releases, there should be plenty of themes to choose from including the one you are looking for.