How do I do this? do I need only gallery2 embedded, or do I also need g2image embedded?

I want to be able to have specific thumbnails appear in a sidebar block. Each image will have a text link below it. Both the image and the corresponding text link will link to a custom URL of my choosing.

I've got a site with 4.7 running. I can use the views module to direct specific content into a block.

Thanks.