Imagecache Profiles module allows you to set user profile pictures that are consistent throughout your site and allows avatars on the user profile pages to be a different size. The module also allows for style definitions to be defined for images used in Comments and Nodes.
The standard Image styles in Drupal 7 core are; thumbnail, medium and large. If a different Image style is desired, it can be created.
Part 1. Create a new Image style to use with ImageCache Profiles.
Here is an example of how to create a new Image style, your settings can vary.