Change default member avatar

Hello,

how can I oblige members to change their avatar image at registration?
Please, help me!

Thanks

iknow i wish their was a field , when they register, that allows them to upload an image as their avatar, on the registration form

Yes... But I'd like to know how to do it!

On your forum, it should be relatively simple since you use the 'Log In' widget which displays the user avatar.

All you'd need to do is check that image, if its src is that of your default avatar, then redirect them to the profile page so they have to set an avatar. (obviously display some sort of pop up saying they have to set an avatar, unless they won't know whats going on )

Can you provide me the code?
Something useful?