Loggin on to 98

hi
i have w2k server set up and running. until the other day i had a machine with 98 and 2kprof installed on it…had some problems and decied to reformat and reinstall just 98

the problem is now that i have reinstalled, when i try to access theshares on the 98 machine from the w2k server (logged in as admin) i get a ‘not authorised to log in from this station message’any ideas how i can authorise this???