[support] Provide multiple default images for imagefield

Hi everybody, I implemented my users profiles pictures with imagefield and content profile and I'd like to let the user upload an image (successfully done with imagefield and imagecache) but also to have the option of choosing among more than one default image. So the user have 2 choices: or he uploads one or he chooses among various images (with radio buttons).

Any suggestion to achieve this ? I asked this on Drupal Answers: http://drupal.stackexchange.com/q/4682/594 but wasn't successful, they recommends me Avatar_selection which is for User images that I don't use and Gravatar which I'm not sure will apply there.

Any idea ? Should I reengeneer my solution to use User pictures from core ?

Thanks