How to show taxonomy_images in my theme... please an example? :-)

Hi there!
Sorry for this silly question, but I don´t quite understand the last steps on how to make available the images instead of the taxonomy names.

I have three categories A, B, C. Only A and B have an image.

I need the theme to show the term name in case it´s not associated with an image (C case), and in the other two cases (A and B) to show the taxonomy image.

I understand that I should call taxonomy_image_display($term->tid) somewhere in the template file (don´t know how), and then put some stuff somewhere at the node.tpl.php file (maybe replacing <?php print $terms?> for some other stuff)...

Please, would anyone be so kind as to show me an example of this?

Note:
I´m working with Garland theme on 5.0

Last question: Can this be used with views module? To be able to choose between showing the term name OR the term image?

Thanks in advance for your time, help, and patience!!

Rosamunda