hi. I'm still trying to use xll files to be able to use c++ code for custom
excel functions. No one seems to be fielding these questions, but I thought
I'd try again. I'm trying to use the xllregister method in vba to call
functions in an xll file. here is the code:

sub main()
Application.registerxll "filename.xll"
Dim c As integer
c = AddTwo(8,9)
....
End Sub

I get an error message "sub or function not defined"
The addtwo function from my xll works fine when used in excel. Any
thoughts? I'm pretty much out of my league at this point, but I have to get
this done for work. Pls help.