To upgrade an older MS Access database that worked with RadiusNT 2.2 so that it works with RadiusNT 2.5, modify the following tables and add the respective fields: Servers: RadRoamServerID (Number/Long Integer) AccountTypes: DNISGroupID (Number/Long Integer) RadAttributes: RadVendorID (Number/Long Integer) RadVendorType (Number/Long Integer) RadConfigs: RadVendorID (Number/Long Integer) RadVendorType (Number/Long Integer) RadCheck (Number/Long Integer) Default: 0 RadATConfigs: RadVendorID (Number/Long Integer) RadVendorType (Number/Long Integer) RadCheck (Number/Long Integer) Default: 0 Import Theese tables from the radius97.mdb database. You can do this by using the File...Import pull down menu. RadLogMsgs RadLogs RadRoamDomains RadRoamServers RadVendors You will need to update the relationships manually. They are descibed in the documentation.