Can anyone help me with authentication? We have a W2K domain controller network, when ISA is asking for authentication, where is is getting the username / password info from? the Domain Controller? Locally? I have tried it both ways and it always fails. Any advise? Thanks Bob Garrison Jefferson County Library Central Services 3021 High Ridge Blvd. High Ridge, MO 63049 636-677-8689 email: bgarrison@xxxxxxxxxxxxxxxxxxxxxxx "It all comes down to a check box"