Excel 2010 :: Import Module Via VBA Instructions?

I'm working on MS Excel 2010 and trying to have a macro duplicating a sheet(and it's associated macro "Update") in another workbook.

I manage to do almost everything except to import the required module "Update" from a precise and static folder ("Ressource" located in the same folder as all the workbooks) into my active workbook, which is surely possible.

Moreover if you know a way to check if a module already exists and in that case overwrite it, I'd be even more grateful. Presently I just skip the error if it exists.

Here is my actual code:

Code:
On Error GoTo ErrImport
ErrImport:
If Err.Number = 1004 Then
MsgBox ("Already there")

[Code].....