macro without workbook

[kaipan]

Hi,

I have found out that it's possible to do this:

I have a file (A) which contains a macro and looks like a regular xls file.
If I open this file (A) basically nothing (visible) happens.
If I then open another excel file (workbook B) the macro (A) will appear in a module in this opened workbook.

Could you tell me how can I create a macro without a workbook (like A)?

I tried to export the modul where the macro is saved but then it was not possible to open the exported module...

Thanks