That depends on how you coded the name script, but assuming you're using something similar to what's in BZ's article, you should be able to make a link to the same page you're on, call it 'Reset Name', and then in the link script, put
%DIGIT1 := 0
%DIGIT2 := 0
%DIGIT3 := 0
%DIGIT4 := 0
%DIGIT5 := 0
%DIGIT6 := 0
%DIGIT7 := 0
%DIGIT8 := 0