Jar for widget on dashboard

I am working on a mod of a widget and i need your help.

(i know very little please don't criticize my ignorance)

if you go into a jar and go through a bunch of folders and see 3 classes and erase the orginal creator's name (because it is such an eye soar)and then make it back to an archive with the right name and everything, when i load it it comes up with an x showing that i have done something wrong. How can i fix it?

here are the 2 widgets from a website

http://henryrocks.zoomshare.com/files/Widget.zip

#477347