Hi
Ther are a few methods
Prompt (from the report's base query) for the user to input path
Base report on a form with a set of paths in a listbox
You can set some vba to select the path based on user input
etc
Can you give a little more information about what you are trying to do
ie.
Are the paths taken from the same folder
Are they stored in your DB
Are they linking to an external application (outside office)
etc
Have a look at this
http://support.microsoft.com/kb/170531