I'm trying to figure out if I missed a step.
According to MSDN, after creating a working HTML file (or files), all I should have to do is ZIP the files up, then rename the .ZIP file to a .GADGET file. I did that. To upload to EQ2Interface, I needed to again zip up the .GADGET file so that I could upload it. On the other end, you would have to extract the .GADGET file from the .ZIP file, then double click it to add it to the sidebar archive. Next you would click the + sign to add a gadget and it show in the archive. If this isn't happening, then Microsoft lied in their instructions:
MSDN Sidebar Gadgets Quickie
I will have to do further research to find out what might be missing in the steps to disallow this.
Thanks for your feedback. It really does help.