I have an Excel add-in that i built. However, as we all know the security is
not good. I know want to buid a newer version but with better security. I
just recently downloaded Visual Studio 2005 (w/ VB). I want to know what my
options are for building this add-in. And I guess a better question is does
it actually need to be an add-in or a standalone piece of software? I want
to be able to update it, secure it, distribute it etc

I am getting a little confused with all I am reading. I keep reading about
VSTO, managed workbooks, different types of COM Add-ins etc. Not sure if
VSTO applies if I am buidling an add-in or standalone program.

Can anyone provide insight on this?

Thanks

EM