I think you need to be more specific about the problem that you are having. You don't have to use the wizard but you still need to create an Active Data asset that links to the Excel file. The code would be pretty much the same as what is produced with the wizard.
I do this.
I also responded to another post of yours so I will take a shot in the dark.
I spool data into a text file from an Oracle db. Then I read that data into a variable for use with my script. I loop through the data for that variable.
Hope that helps!