good com excel add-in books
 

Hi,

I want to make some C++ com based add-ins for excel.
I would like to know which are the best books for the job

The only one i know of is for pure com - inside com.
So guess i would need some activex/mfc/atl stuff too ??

thanks in advance
arun

google showed these alone

Excel Add-in Development in C/C++:
Microsoft office excel 2003 programming inside out