You need to use VB 6 or the Developer edition of Office to create a COM
Addin. The best guide I've seen around is in the book 'Excel 2002 VBA' by
Stephen Bullen, John Green, Rob Bovey and Robert Rosenberg.

--
Regards,

Juan Pablo González

"Liam" wrote in message
...
I have a lot of VBA code, and although the project is
protected from viewing with a password, I understand that
this only protects you from honest people. How can I
convert it to a com add-in or some other form of
programming more secure?

Also, is there some way to use license keys to prevent
free duplication?

Liam