Not from within Access. There may be some conversion tools, or it can be done
manually.
However, if the reason you want to do this is to distribute the application
to computers that do not have Access, you can distribute the free runtime
version of Access with your application so the workstation does not need to
have the full version of Access installed. This will allow the user to run
your application but not change its structure (just the data).
The runtime version of Access is part of the Access developer tools package,
which is part of an add-on that is purchased separately from Access but is
needed only on your development workstation. Assuming Access 2003, the Access
developer tools are part of the Visual Studio Tools for Office.