Logon script

Have a domain running in mixed mode. Have a W2K server
with Active Directory that was upgraded from Windows NT
4.0 and was the PDC. When users log on from W2K or WXP
Pro computers, the user's logon script runs. If users log
on from W9.X computers, the logon script does not run.
The scripts are .bat files and are assigned to the users
in Active Directory Users and Computers. I currently have
2 NT 4.0 BDCs but no other W2K servers running Active
Directory. What am I doing wrong?