How to change the connectionstring during setup in VB.NET

I am using an oleDbConnection to connect to a MS Access file (mydata.mdb) that uses Connectionstring ....Datasource="c:\data\mydata.mdb"...
I want to give the users ability to change this filepath during setup.
A filedialog box (or something) to browse to a fileshare for example g:\data and then the setup will install/copy the mydata.mdb to g:\data,
and change the datasource path to the same selected fileshare.

I have tested the Application Configuration File withe the following xlm code:
<?xml version="1.0" encoding="Windows-1252"?>
<configuration>
  <appSettings>
    <add key="datasource" value="g:\data" />
      </appSettings>
</configuration>

Example of different installation cenarios:
One company will maybe use a local installation and the datasource value would be "c:\data" (default)
The next company will maybe use a client/server model and the datasource value should point to a datashare ("x:\common")
The next company will maybe use a client/server model and the datasource value should point to a datashare ("f:\dep_data")
and so on...

I want the user/company to select where to put the mydata.mdb during setup ( OR at first application startup )
(Not manually change the configuration file).