When I select a table to query I receive the error " The query cannot be executed because some files are either missing or not registered. Run setup again to make sure the required files are registered." I am running XP Pro on the desktop. This is the path that I select: Enterprise Manager - SQL server to attach to - select the database - select the table - select to query all rows. The odd thing about this is that it was working fine on Friday & on Monday it doesn't work. I have uninstalled & reinstalled the MDAC. Did not correct the problem.