VB 6 API Programming

[moa]

hello,

1) open the Excel file
2) Read the API function name, required parameters value.
3) Call the API
4) Store the result in other excel file.

I hardly understand (just guess... without being quite sure)

1) what does "open the Excel file" mean ? would it be "open an existing and known excel File ?

2) When tou say " Read the API function name, required parameters value",; what do you exactly mean ? Read from where ?