Relative file references

Why not just place the three MDEs in the same folder on the target system? Access should find the MDE references just fine.

Or are you using the add-in logic with the USysRegInfo table? You don't really need to do that with your own add-ins. Just with developer type add-ins such as Rick Fisher's Find and Replace.

If this isn't working for you then tell us what error messages or symptoms.

To get the file path for the access application

CurrentProject.Path & "\"

Then just add the other files into the same directory and get them by name. i.e.

Dim filepath As String
filepath = CurrentProject.Path & "\name_of_file.mda"