Welcome back! I'm not quite sure what you mean by going back to "regular basic sparks setting" though. If you want to reset your program and start over, you can do that, but that will clear out all previously tracked data. So if you don't want to lose that data, you won't want to reset. If you do want to reset, this page has instructions on how to do that: www.sparkpeople.com/community/help_answer.
Can you tell me what you are looking for when you say "regular basic sparks setting"?
As for the diabetic program, this page has info on how to add that: www.sparkpeople.com/community/help_answer.
I hope that helps!