Visual Basic 2008 RDLC report

Question

Hi,
Basically, this is a VB program to pull some data from an access database and display it in a report, RDLC.
 
There are 2 databases, One  local and one on the server. Depending on which one db the user select it will display the report from that db. How can I make the datasource dynamic depending on which db the user selected for the data to be display in the report.