Workstations logging into remote domain controllers instead of local ones

Hello,

I have quite a few workstations that seem to be logging into remote domain controllers instead of the local ones.  We have two domain controllers onsite and 4 in remote sites.  I can't seem to figure out why our Windows 2000 workstations are authenticating to the remote DCs instead of the local ones.  What are some of the things I should be looking for?  All DCs are Windows 2000 Server, and workstations are Windows 2000.  Any help would be appreciated.  Thanks.
mcascioAsked:
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GregMoseleyCommented:
Have you got Sites & Services configured correctly?

Taken from http://www.windowsitlibrary.com/Content/594/1.html
"Note With Active Directory, a workstation discovers its site by presenting its subnet to the first Active Directory server it contacts. The workstation determines the subnet by applying its subnet mask to its IP address. Dynamic Host Configuration Protocol (DHCP) can assign the subnet mask and IP address, or the system manager can statically configure them. The first server that the workstation contacts uses the subnet to locate the site object for the site where the workstation is located. If the current server is not in that site, the server notifies the workstation of a better server to use. "

http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/directory/activedirectory/stepbystep/adsrv.mspx
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mcascioAuthor Commented:
thanks Greg,

I think I may have found the problem in one of the subnets.
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