Well Brandon, since you have 17,060 posts and I have a mere 6, I'll cut you some slack :-)
I re-worded some of our registration questions and we're actually making it work with dropdowns and radio buttons.
Thanks!
Yes, checkboxes would be awesome, but I can try this for now:
Where do find that option? In my Add Custom Profile Field > Field settings, I only see drop down, radio, text input and text area.